Third trimester overview: Monitoring, Preparation, and Birth Decisions

The third trimester, beginning around 28 weeks, combines continuing pregnancy care with preparation for birth. There may be more appointments and more practical decisions. A useful approach is to keep routine planning separate from symptoms that need an immediate call.

Routine care still matters when you feel well

Appointments provide opportunities to check blood pressure, urine, growth and wellbeing, and to review results or symptoms. Your schedule depends on your history and the care system where you live. Extra visits or scans may be recommended for a particular concern.

Ask which results are still outstanding and what the next visit is intended to cover. Later appointments include conversations about the baby’s position, birth preferences and what happens if pregnancy continues beyond the due date. The prenatal appointment guide explains the typical NHS timetable without making it a rule for every pregnancy.

Continue noticing your baby’s movements

Movement should continue through the final weeks and labour. A reduction, stopping or a concerning change is not something to explain away as less room. Contact your maternity unit immediately, including overnight, rather than waiting for a booked check or using a home Doppler for reassurance.

A previous normal assessment does not cancel a new concern. Tell the team if the pattern worries you again. Our baby movements guide gives more detail.

Make sleep and support practical

From 28 weeks, go to sleep on your side, including for naps. Either side is suitable. If you wake on your back, simply turn onto your side. Pillows supporting the bump or between the knees may make rest more comfortable.

If tiredness or poor sleep is affecting how you cope, tell your midwife. Ask for help with specific tasks where available, such as shopping or a long commute. You do not have to complete every preparation task before accepting help.

Keep birth preferences flexible and clear

A birth plan can communicate who you want with you, pain relief preferences and communication needs. Discuss what is available and what may change if a complication arises. The week 33 birth preparation guide offers questions for that discussion.

Separate those plans from urgent symptoms. A severe persistent headache, vision changes, pain below the ribs, sudden swelling of the face or hands, or feeling very unwell needs immediate maternity advice. Pre eclampsia may develop even after earlier checks were normal. Preparation is useful, but it should never delay asking for assessment when something changes.