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Dr. Chrysoula I. Liakou MD, PhD
- Treated online: Yes, for assessment and a plan: the doctor reviews the pattern of tiredness by video, screens for depression and sleep problems, directs blood tests for anaemia, thyroid and sugar, and prescribes iron when deficiency is confirmed; fatigue with breathlessness at rest needs in-person care.
- What it is: the exhaustion of early pregnancy, when progesterone soars and the placenta is built, and of late pregnancy, when weight, broken sleep and anaemia add up; most women feel it in the first 12 weeks, lift in the second trimester, and dip again from 30 weeks.
- Anaemia: iron-deficiency anaemia affects about 1 in 4 pregnancies, causing tiredness with breathlessness, palpitations, dizziness, pallor and restless legs; a blood count is checked at booking and 28 weeks, a ferritin test finds low iron earlier, and routine iron for everyone is not recommended.
- Other causes: an underactive or overactive thyroid, gestational diabetes, depression or anxiety, insomnia, sleep apnoea, low vitamin D or B12, infection and severe sickness all cause tiredness in pregnancy and are each found by a question or a blood test, so unexplained tiredness is assessed.
- How long: first-trimester tiredness usually eases by 12 to 16 weeks; second-trimester energy lasts until about 30 weeks; late tiredness continues until the birth; anaemia tiredness improves within 2 to 4 weeks of iron treatment, and thyroid-related tiredness within weeks of the right dose.
- Emergency: tiredness is never a 112 emergency; call 112 for collapse, severe chest pain or severe breathlessness, and go to the maternity unit for tiredness with a severe headache, visual change or sudden swelling after 20 weeks, or with reduced baby movements.
Tiredness on its own is safe to assess online. Move faster than a routine booking if fatigue comes with breathlessness at rest, chest pain or fainting (urgent in-person care), with a severe headache, vision changes or sudden swelling late in pregnancy (urgent maternity assessment for possible pre-eclampsia), or with a flat, hopeless mood or thoughts of self-harm, which needs mental-health support straight away.
Is extreme tiredness normal in pregnancy?
Usually, yes. First-trimester exhaustion is driven by soaring progesterone and the metabolic work of building a placenta, and it can be profound; energy typically lifts in the second trimester and sags again in the third under weight, broken sleep and a busy heart.[3] Fatigue with breathlessness on mild effort, palpitations or paleness suggests anaemia, which a simple blood test settles. Testing thresholds vary slightly by country.
How an online consultation helps with tiredness in pregnancy
- The pattern, read properly: normal pregnancy fatigue tracks the trimesters; fatigue that worsens week on week, or arrives with other symptoms, does not. The doctor reads which curve you are on.
- The right tests, not guesswork: a full blood count and ferritin for iron status, thyroid testing when the picture fits, and glucose testing through your maternity schedule, each ordered for a reason and explained.[1]
- Iron honesty: iron helps when you are deficient and burdens you when you are not. The doctor treats numbers plus symptoms, not vibes, and shows you how to take iron so it actually absorbs.
- The mood check built in: exhaustion is also depression’s favourite disguise in pregnancy, so every tiredness consultation includes the two screening questions that tell the difference.
What the doctor checks in an online tiredness consultation during pregnancy
Fatigue has a short list of treatable causes in pregnancy, and the history sorts most of them. The doctor will typically check:
- Trimester and trajectory: how many weeks you are, when the tiredness began, and whether it is stable, lifting or deepening, because the shape of the curve is diagnostic in itself.
- Anaemia clues: breathlessness on stairs, a pounding or racing heart, paleness, dizziness on standing, headaches, restless legs at night, and cravings for ice or other non-foods, plus risk factors: heavy periods before pregnancy, pregnancies close together, twins, or a previous iron deficiency.[1]
- Thyroid clues: feeling cold when others are warm, constipation, dry skin and hair, a hoarse voice, or the opposite direction: heat intolerance, tremor and anxiety with weight loss. A personal or family history of thyroid disease raises the priority.[4]
- Sleep versus fatigue: whether you are tired because the nights are broken, covered on the insomnia in pregnancy page, or exhausted no matter what the night gave you, which points more towards the blood tests.
- Mood, screened not assumed: the two standard questions about low mood and loss of interest, because persistent exhaustion and depression overlap heavily and both are treatable; the depression in pregnancy page takes over where screening points that way.
- The rest of the list: thirst and heavy urination (glucose testing through maternity care), medicines and supplements you take, recent infections, and how much is simply an unsustainable load carried without help.
What blood tests should be checked for tiredness in pregnancy?
The work-up is short and decisive. A full blood count checks for anaemia, and it is already part of routine antenatal care at booking and again around 28 weeks, so the first question is often simply what your last result showed.[3] Pregnancy uses lower cut-offs than usual because blood plasma expands faster than red cells: broadly, haemoglobin below 110 g/L in the first trimester or below 105 g/L later counts as anaemia.[1] Ferritin measures iron stores and helps explain restless legs even before anaemia appears. Thyroid function is tested when symptoms or history point that way rather than routinely, and women already on levothyroxine need their dose checked early in pregnancy, because requirements usually rise.[4] Glucose testing for gestational diabetes runs through your maternity schedule. The honest limit: an online doctor cannot draw blood through a screen. What the consultation does is decide which tests you need, point you to where they are done in your country (midwife, practice or laboratory), and then interpret the results with you properly, including results you already have sitting unexplained in an app.
Iron in pregnancy, honestly
Iron demand rises steeply as your blood volume and the baby’s stores grow, and iron deficiency is the most common cause of anaemia in pregnancy worldwide.[2] Routine iron for every pregnant woman is not recommended in European practice; treatment follows tests.[3] When you are deficient, treatment doses are higher than the token iron in pregnancy multivitamins, and technique decides success: take iron away from tea, coffee, milk and antacids, pair it with vitamin C such as a glass of orange juice, and expect harmless dark stools, with constipation manageable by fluids, fibre and, if needed, a change of preparation. Energy returns over weeks as stores refill, and a repeat blood count after a few weeks confirms the treatment is working.[1] Do not self-prescribe high-dose iron on spec: unneeded iron trades no benefit for real side effects, and an unexplained low result deserves a doctor’s look rather than a supplement reflex. Folic acid is the separate, genuinely routine supplement of early pregnancy; the two are often confused and do different jobs.
The thyroid, quietly in charge
An underactive thyroid slows everything: energy, digestion, temperature, mood. Its symptoms are easily filed under “just pregnancy”, which is exactly why it is worth testing when the cluster fits, and untreated hypothyroidism matters for the baby’s development as well as for how you feel.[4] Treatment is levothyroxine, which is safe in pregnancy and adjusted by blood tests; if you were on it before conceiving, get your dose reviewed as soon as pregnancy is confirmed rather than at the first routine visit.[4]
When is tiredness in pregnancy a warning sign?
When it stops being background and starts being an event. Breathlessness at rest or lying flat, chest pain, palpitations with faintness, or actual fainting move the question from fatigue to the heart and circulation: see the page on heart problems in pregnancy, and treat those symptoms as urgent. Severe exhaustion arriving suddenly alongside headache, vision changes or swelling in later pregnancy belongs to the pre-eclampsia warning list and means same-day maternity assessment. Exhaustion with fever means infection until proven otherwise. And exhaustion that has swallowed your interest in everything, for weeks, with guilt attached, is depression wearing fatigue’s clothes, and it deserves treatment, not better time management.[5]
Tiredness in pregnancy: likely cause and next step
Swipe sideways to compare →
| Presentation | Likely first step | Suitable for online care? | When referral or in-person care is needed |
|---|---|---|---|
| First-trimester exhaustion, otherwise well | Reassurance, rest planning, food and fluid rhythm | Yes | If it deepens instead of lifting into the second trimester |
| Tired plus breathless on stairs, palpitations, paleness or restless legs | Full blood count and ferritin for anaemia | Yes, with tests arranged locally | Marked anaemia, symptoms at rest, or late pregnancy needs prompt in-person care[1] |
| Tired plus cold intolerance, constipation, dry skin, or a thyroid history | Thyroid function testing; early dose review if already on levothyroxine | Yes, with tests arranged locally | Abnormal results are managed with your doctor; new diagnoses need follow-up[4] |
| Tired plus low mood or lost interest for more than two weeks | Depression screening and assessment | Yes | Moderate to severe symptoms go to perinatal mental-health services |
| Exhaustion with breathlessness at rest, chest pain, fainting, or pre-eclampsia signs | Urgent in-person assessment | No | Same day via maternity unit; 112 for collapse, chest pain or severe breathlessness |
Not sure which row is you? A doctor can tell you in one consultation.
See available times →Treatment options for tiredness in pregnancy
What you can do yourself
Grant yourself the rest your body is demanding: first-trimester tiredness is physiology, not weakness, and fighting it costs more than yielding to it. Nap short and early, 20–30 minutes before mid-afternoon, so nights stay intact. Eat regular meals with iron-rich foods (red meat if you eat it, lentils and beans, leafy greens, fortified cereals) paired with vitamin C, and keep caffeine modest and early. Gentle daily movement genuinely lifts energy, counterintuitive as that feels. Offload what can be offloaded, and say yes to help as practice for the year ahead. If broken nights are the engine of the exhaustion, treat the nights: sleep positioning, heartburn and racing-mind fixes are on the insomnia page.
Prescription treatment
There is no prescription for pregnancy itself being tiring, and no stimulant or tonic belongs in this story. What a doctor treats is the cause found: iron, prescribed at treatment dose when tests confirm deficiency, with technique and a recheck built in; levothyroxine started or adjusted for thyroid disease, guided by blood tests; reflux treatment when heartburn is wrecking sleep; and depression treated properly when screening finds it, with perinatal specialist input for medication decisions in pregnancy.
When tiredness is assessed online, and when you need in-person care
Assessed online: the pattern and probability of normal pregnancy fatigue; anaemia and thyroid risk, with the right tests directed to a local service and results interpreted properly afterwards; iron treatment set up and followed up; sleep-driven exhaustion; and mood screening whenever exhaustion has flattened more than energy.
In-person care: fatigue with breathlessness at rest, chest pain, palpitations with faintness or fainting, to urgent in-person assessment; sudden severe exhaustion with headache, vision changes or swelling, to same-day maternity assessment; marked anaemia or anaemia late in pregnancy, to your maternity team promptly, because treatment plans change close to birth; new thyroid abnormalities, into proper follow-up; and glucose testing, through your antenatal schedule. Tiredness sits alongside the other pregnancy conditions the doctors assess online.
When to get in-person care
Seek urgent same-day help if exhaustion comes with breathlessness at rest or lying flat, chest pain, fainting, a racing heart with faintness, fever, heavy bleeding, or with severe headache, vision changes or sudden swelling in later pregnancy. If your baby’s movements slow or stop, contact your maternity unit straight away. For collapse, severe chest pain or severe breathlessness, call 112 now.
If you are having thoughts of harming yourself, call 112 in an emergency. You can also find your national crisis helpline at findahelpline.com. You do not have to wait for an appointment.
How Mobi Doctor works
- Book a time that suits you: open daily 7am–11pm CET. You can see a doctor over video, usually within 15 minutes. No subscription, exact price up front.
- Speak to a licensed doctor about tiredness in pregnancy: a private video call from anywhere in Europe, with any recent blood results to hand if you already have them.
- Get your plan: reassurance, the right tests directed locally, or treatment and follow-up when a cause is confirmed, or a full refund.
No sign-up needed
Tiredness in pregnancy can have more than one cause. Tick every symptom you have to see each page that mentions it. It finds the right page, not a diagnosis: a doctor gives you that on a video call.
Tap the body — an area or a point — to browse symptoms anywhere
Similar symptoms, different condition? Insomnia in Pregnancy and Mood Swings in Pregnancy can start the same way. Compare them, or look up any other symptom in the full symptom checker.
Frequently asked questions about tiredness in pregnancy
What causes tiredness in pregnancy?
Early on, progesterone soars, which is directly sedating, blood volume starts expanding, blood pressure and blood sugar run lower, nausea spoils eating and sleep, and the body is building a placenta from scratch. Later, the weight of the bump, broken sleep from the bladder and heartburn, anaemia as iron stores run down, and the work of carrying extra blood and a baby take over. Thyroid problems, depression, gestational diabetes and infection are the treatable extras.
Why am I so tired in the first trimester?
Because your body is running its biggest construction project: progesterone has soared, blood volume is expanding, you are building a placenta that will take over by 12 weeks, and your metabolism has changed before the bump shows anything. Nausea, a lower blood pressure and blood sugar, and lighter sleep add to it. First-trimester tiredness is physiology, it usually lifts between 12 and 16 weeks, and it is not a sign that anything is wrong.
Can an online doctor test for anaemia in pregnancy?
Not through the screen, and honesty matters here: blood is drawn at a local laboratory or clinic. What the online doctor does is decide from your tiredness, symptoms and stage which tests you need, a blood count, ferritin, thyroid function, glucose, vitamin D or B12, direct you to where they are done, review the results with you, and prescribe iron or other treatment when a result confirms the need, usable at a pharmacy near you.
Should every pregnant woman take iron?
No. Routine iron for all is not recommended in pregnancy; iron is prescribed when blood tests show deficiency or anaemia, because unneeded iron brings constipation, nausea and stomach upset for no benefit. What everyone should do is eat iron-rich food, red meat, beans, lentils, eggs, leafy greens and fortified cereals, with vitamin C to absorb it and tea and coffee kept away from meals, and have the blood count checks at booking and 28 weeks.
When does pregnancy tiredness get better?
For most women, noticeably in the second trimester, from about 12 to 16 weeks, when the placenta is built and hormones plateau; energy then commonly dips again from around 30 weeks as the bump grows, sleep breaks up and iron stores fall, and continues low until the birth. Tiredness that does not lift at all in the second trimester, or that worsens suddenly, is the kind that earns a blood test rather than more rest.
Is tiredness a sign of depression in pregnancy?
It can be, and the overlap is exactly why screening belongs in every fatigue assessment. Tiredness alone, with interest and enjoyment intact and a lift after rest, is physiology; tiredness with low mood, loss of interest, hopelessness, poor concentration and sleep that is broken beyond what pregnancy explains, lasting two weeks or more, is depression, which affects about 1 in 8 pregnant women and is treated. The doctor asks the screening questions by video.
When is pregnancy tiredness worth a blood test?
When rest stops working or the pattern changes: tiredness that persists through the second trimester, that comes with breathlessness, palpitations, dizziness, pallor or restless legs, that is paired with feeling cold, constipation and weight gain or with heat intolerance and a racing pulse, that follows heavy periods or a short gap between pregnancies, or that comes with thirst and frequent urination. A blood count, ferritin, thyroid and glucose cover nearly all of these.
What symptoms with tiredness in pregnancy matter?
Breathlessness at rest or on mild exertion, palpitations, dizziness or fainting, pallor, a racing pulse, severe headache, visual disturbance or sudden swelling after 20 weeks, fever, thirst with frequent urination, low mood or hopelessness lasting two weeks, loud snoring with breathing pauses, and reduced baby movements. Tiredness with any of these is assessed rather than rested, and the first group needs in-person care.
How long does tiredness last in pregnancy?
First-trimester tiredness usually eases between 12 and 16 weeks; the second trimester is the energetic stretch for most women; tiredness returns from about 30 weeks and continues until the birth and through the early weeks with a newborn. Anaemia tiredness improves within two to four weeks of starting iron, thyroid tiredness within weeks of the right dose, and depression-related tiredness as treatment takes effect over six to twelve weeks.
What can I do myself about tiredness in pregnancy?
Sleep when you can and nap early in the day, go to bed earlier rather than pushing through, eat small regular meals with protein and iron-rich food, drink enough, walk or swim most days, which raises energy rather than draining it, cut caffeine after lunch, sleep on your side with a pregnancy pillow, hand over tasks and lower the bar on everything non-essential, treat heartburn and restless legs, and keep a simple energy diary.
Can tiredness in pregnancy be prevented?
The physiological tiredness cannot be prevented, only managed; what can be prevented is the tiredness from treatable causes: eating iron-rich food and having the blood checks catches anaemia early, keeping thyroid conditions well controlled before and during pregnancy, protecting sleep from the start, staying active, getting help for low mood early, and attending the gestational diabetes screen if offered. Starting pregnancy with good iron stores is the single most useful step.
Could my thyroid or gestational diabetes be behind the tiredness?
Possibly. An underactive thyroid causes tiredness with feeling cold, constipation, dry skin and weight gain, an overactive one tiredness with heat intolerance, a racing pulse, tremor and weight loss, and both are common in pregnancy and after birth. Gestational diabetes, screened for between 24 and 28 weeks, causes tiredness with thirst, frequent urination and thrush. Both are found by simple blood tests and treated, and both matter for the baby.
Is it pregnancy tiredness, anaemia, depression or thyroid?
Pregnancy tiredness follows the trimester pattern, lifts with rest and leaves mood and interest intact. Anaemia adds breathlessness, palpitations, pallor and dizziness, and shows on a blood count. Depression brings low mood and loss of pleasure most days for two weeks or more. Thyroid problems add cold or heat intolerance, weight change and a slow or racing pulse, found by a blood test. The doctor sorts them by the pattern and the tests.
- Anaemia - iron deficiency, NICE Clinical Knowledge Summaries, revised 2024.
- Anaemia fact sheet, WHO, World Health Organization, 2023.
- Antenatal care (NG201), NICE, National Institute for Health and Care Excellence, 2021.
- Hypothyroidism, NICE Clinical Knowledge Summaries, revised 2024.
- Antenatal and postnatal mental health: clinical management and service guidance (CG192), NICE, National Institute for Health and Care Excellence, 2014 (reviewed 2025).
- Tiredness and sleep problems in pregnancy, NHS, National Health Service (UK), reviewed March 2024.
This page is for information only and is not a substitute for a medical consultation. Guideline links are provided for transparency; treatment decisions are made with your doctor.
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