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Guides and registry adviceApril 12, 2026
NestBub Editorial
Guide notes
The third trimester is the final stretch where late pregnancy becomes practical. It is usually counted from around week 27 or 28 until birth, and it can include more frequent appointments, stronger movement patterns, birth planning, car-seat checks, hospital-bag packing, and a lot of sorting between what feels urgent and what can wait.
7 min read
Dates can look slightly different between apps, hospitals, and pregnancy books. Some resources say week 27, others say week 28, and your own due date still matters more than the label. A baby born from 37 to 42 weeks is usually described as full term, while birth before 37 weeks is preterm. If pregnancy continues beyond the due date, your doctor or midwife will talk through monitoring and induction options.
Your baby is still growing, gaining weight, and preparing for birth. Many babies move head-down before labour, but some remain breech or transverse into the later weeks. If your baby is not head-down, your care team may discuss extra scans, external cephalic version, caesarean birth, or other options that fit your situation and local hospital policy.
Later appointments often shift toward birth and newborn care. Between about 29 and 34 weeks, your team may discuss skin-to-skin contact, support people, early feeding, rooming-in, breastfeeding, formula feeding if you plan to use it, pain relief, birth preferences, and recognising the stages of labour. From about 35 to 37 weeks, they may check baby's position and discuss group B strep testing if your hospital routinely offers it.
Baby movements are one of the most important third-trimester checks. Your baby should continue moving in their own usual pattern right up until birth, even if movements feel more like rolls, stretches, or pushes as space gets tighter. If movements slow, stop, become much weaker, or worry you for any reason, contact your midwife, doctor, or hospital immediately and do not wait until the next day.
Labour can start in different ways. Your waters may break, contractions may become regular and painful, your mucus plug may come away, you may notice a bloody show, or you may have nausea, vomiting, soft stools, or diarrhoea. If you think labour has started, call your hospital, midwife, or doctor so they can tell you when to come in and what to watch for.
This is also the trimester for practical logistics. Book or finish antenatal classes, confirm where to park or enter after hours, pack a hospital bag, keep pregnancy notes accessible, arrange a properly fitted rear-facing car seat, organise care for older children or pets, and write down who to call if birth starts earlier than expected.
Home setup does not need to become a full nursery reveal. Prioritise the first week home: a safe sleep space, nappies and wipes, simple baby clothes, feeding supplies for your plan, a recovery basket, meals, clean towels and sheets, and a low-effort station near where you will feed or rest. Borrowing or delaying non-urgent gear can be smarter than filling the house before you know your baby.
Work and life admin can be easier when it is written down. Confirm parental leave dates, handover plans, health insurance or hospital paperwork, birth registration steps, partner leave, visitor boundaries, meal support, pet care, and the route to hospital. Put key phone numbers somewhere your support person can find without unlocking your phone.
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