Fatigue When Pregnant: What to Know

Hormonal changes, increased blood production, disrupted sleep and the physical effort of supporting a growing baby can all lower your energy. Nausea, reduced appetite, emotional strain and frequent night-time urination may add to the problem. Tiredness often changes across pregnancy rather than following one fixed pattern.

Exhaustion that feels out of proportion, continues despite rest, or comes with breathlessness, paleness, dizziness, palpitations, low mood or unusual thirst should be discussed with a clinician. Anaemia is one possible cause; infections, thyroid problems and other health conditions can also contribute. Fatigue itself does not identify one diagnosis.

Rest when you can and ask for help with physically demanding tasks. Aim for regular meals and fluids, and include iron-containing foods such as beans, leafy vegetables, meat or fortified cereals where these fit your dietary needs. Do not start iron or other supplements without pregnancy-appropriate advice.

Gentle movement, a consistent bedtime routine and a short daytime rest may help. Keep a simple record of sleep, meals, symptoms and when the fatigue is worst; this gives your midwife or doctor useful detail. Pregnancy check-ups can include questions and blood tests when anaemia or another cause is suspected.

Contact your maternity team promptly if fatigue is sudden, disabling or accompanied by fainting, chest pain, difficulty breathing, heavy bleeding, severe headache, confusion, fever, or inability to keep fluids down. Seek urgent help for severe breathlessness, collapse or heavy bleeding. Otherwise, arrange a routine appointment if tiredness is worsening or interfering with eating, sleeping, work or basic activities.

Could anaemia or another condition explain my fatigue? Do I need blood tests, and are my supplements suitable for pregnancy? How much activity and rest should I aim for given my symptoms?