Week 42 of pregnancy

How your baby is developing

• The pregnancy is typically considered 'post-term'; placental function can gradually decline past this point, so induction of labor is commonly discussed by now.ACOG

How you may feel

• Induction of labor is commonly discussed and offered by this point, per standard obstetric guidance.ACOG

Nutrition this week

• Iron — build fetal stores for the first 6 months of life (Red meat)
• DHA (omega-3) — peak fetal brain + eye growth
• Calcium — final bone mineralisation (Dairy)

When to reach out

• Heavy vaginal bleeding or passing clots.ACOG
• Severe or persistent abdominal or pelvic pain.ACOG
• Severe, persistent nausea or vomiting that prevents keeping any fluids down (possible hyperemesis gravidarum).NHS
• Fever of 38°C (100.4°F) or higher, or chills.WHO
• Severe dizziness, fainting, or a racing/irregular heartbeat.NHS
• Pain or burning when urinating (possible urinary tract infection).NHS
• A severe or persistent headache that doesn't improve.ACOG
• Sudden swelling of the face, hands, or feet.ACOG
• Visual disturbances — blurring, flashing lights, or spots.ACOG
• Regular contractions, pelvic pressure, or low back pain before 37 weeks (possible signs of preterm labor).ACOG
• Fluid leaking or gushing from the vagina (possible ruptured membranes).NHS
• Persistent pain in the upper abdomen, especially under the ribs on the right side.ACOG
• A noticeable reduction in the baby's usual movements, or no movement felt — contact your midwife or doctor promptly rather than waiting; do not wait until the next appointment.ACOG
• Regular, painful contractions before 37 weeks, or any contraction pattern that concerns you near term.ACOG
• Waters breaking, or blood-stained ('bloody show') discharge — a normal sign labor may be starting at term, but call your midwife or doctor to be checked.NHS

These apply to this week specifically. See the full list of urgent warning signs the CDC publishes for pregnancy and the year after birth.