When should you see a doctor about tiredness in pregnancy?

Feeling tired is common as pregnancy changes sleep, circulation, hormones, and the physical effort of carrying a pregnancy. Marked fatigue can also occur with anaemia in pregnancy, an underactive thyroid, or vitamin D deficiency. Tiredness alone does not identify one cause, so a clinician may ask about sleep, diet, mood, bleeding, other symptoms, and medicines before deciding whether tests are needed.

A routine appointment is sensible if fatigue continues despite rest, makes work or self-care difficult, or feels different from your usual pregnancy symptoms. You can read more about [Tiredness in Pregnancy](/symptoms/tiredness-in-pregnancy/) and possible related conditions such as [Anaemia in Pregnancy](/conditions/anaemia-in-pregnancy/).

Keep a simple record of when tiredness began, how it changes during the day, your sleep, meals, activity, and any associated symptoms. Rest when possible, drink regularly, eat varied meals, and accept practical help. Do not start iron or other supplements solely because you feel tired; ask whether a blood test or [Iron Therapy](/treatments/medical-gynaecology/iron-therapy/) is appropriate.

Contact your maternity team promptly for new breathlessness at rest, fainting, chest pain, a racing or irregular heartbeat, heavy bleeding, severe headache, or a sudden major decline in wellbeing. Seek urgent help for thoughts of harming yourself. These symptoms need assessment regardless of whether tiredness is common in pregnancy.

Could anaemia, thyroid disease, vitamin D deficiency, infection, sleep trouble, or low mood be contributing? Do I need blood tests? Which supplements are suitable for me, and when should I contact the maternity team again?