Pregnancy tiredness in the third trimester

As pregnancy advances, finding a comfortable sleeping position, managing back discomfort and waking to urinate can make restorative sleep difficult. Carrying extra weight also makes routine activities more tiring. Tiredness itself does not identify one condition. Anaemia, dehydration, infection, low mood, thyroid problems and nutritional conditions such as coeliac disease can present with fatigue, so the wider pattern matters.

Break chores into smaller tasks and schedule pauses before you feel depleted. A gentle daytime walk or pregnancy-approved exercise may support sleep, circulation and mood; stop if you feel unwell. Keep meals regular, include protein and iron-containing foods, and drink regularly. Protect a wind-down period before bed and ask for help with childcare or heavy work. Continue prescribed antenatal supplements unless your clinician advises a change.

Seek urgent help for severe breathlessness, chest pain, fainting, confusion, a high fever, inability to keep fluids down or a major reduction in urination. Tell your maternity team promptly about fatigue with palpitations, marked dizziness, unusual paleness, severe headache or feeling suddenly much worse. Speak to a clinician about low mood, loss of interest or thoughts of self-harm; immediate support is available for a mental-health emergency.

Could my tiredness be related to anaemia, hydration or another health issue? Should my blood count or other tests be checked? What activity level and rest pattern fit my pregnancy? Which warning signs should lead me to call urgently?