Day 252 baby development and maternal changes

A: True contractions: regular, interval 5-10 minutes, increasingly frequent and strong, not relieved by rest or changing position, possibly with lumbar aches and heaviness. False (Braxton Hicks) contractions: irregular, intermittent, disappearing with rest or activity, usually painless. Seek care promptly if you are unsure.

A: Keep the hospital bag by the door: postnatal pads + nursing bra + toiletries + NB nappies + swaddling + going-home clothes + ID, social-security card and prenatal record; phone and power bank fully charged, the route and obstetrics phone number noted. Pack it a day ahead so you can leave at any time.

A: A cumulative gain of about 12-16kg by week 36 is common. In the third trimester a standard-BMI mum gains about 0.4-0.5kg a week, with about 11.5-16kg recommended across the whole pregnancy. Watch the overall trend — manage by BMI with a weight-gain calculator.

A: Most first-time mums’ babies engage around week 36, with the head fitting into the pelvic inlet; walking grows more laboured, urination worsens and breathing eases a little. Mothers of a previous child may engage later, even in labour. Engaging doesn’t mean imminent onset.

A: The three measurements at 36 weeks: BPD (biparietal diameter) about 88.5mm, AC (abdominal circumference) about 318.3mm, and FL (femur length) about 66.7mm, reflecting head, abdomen and leg development respectively. If the three are in step, growth is good; a single slight deviation isn’t necessarily abnormal — go by your obstetrician’s overall assessment.

A: After the position settles, movement amplitude may change a little but the count should not clearly drop. Since week 28 count daily: one hour morning, noon and evening, with ≥10 in 2 hours normal; if clearly under 10 in 2 hours or less than half the usual, seek care immediately.

A: If the GBS (group-B streptococcus) screen is positive, intravenous antibiotics during labour effectively prevent newborn infection and don’t affect a vaginal birth; if negative, routine care applies. Once the result is in, the doctor records it in your prenatal file and acts on it during delivery.

A: ACOG recommends about 150 minutes of moderate-intensity exercise accumulated weekly. From week 36 visits are already weekly; favour walking, prenatal yoga and pelvic rocking, avoid pressure on the abdomen and long standing; if contractions become frequent, membranes break, there is bleeding or movement clearly drops, stop immediately and seek care.

A: The CDC and ACOG recommend the Tdap (pertussis) vaccine at weeks 27-36; the inactivated flu vaccine can also be given in flu season — both are pregnancy-safe, and this week is still within the window, so tell the provider you are pregnant before vaccination.

A: With no placenta praevia, bleeding, cervical insufficiency or threatened preterm labour, gentle sex is fine using positions that don’t press on the belly and with gentle movements. The closer to the due date, the more cautious — pause if you feel unwell or the doctor advises against it; see a doctor for bleeding, pain or fluid leakage after sex.

A: For a cramp, flex the foot and massage the calf; prevention centres on calcium, magnesium, water and stretching before bed. After engagement the pelvic-floor pressure rises; raise the legs, lie on your left side, walk to promote return flow and limit salt. If the swelling suddenly worsens, spreads to the face and hands or comes with headache/vision changes, check blood pressure to rule out preeclampsia.

A: This week specifically avoid raw or undercooked meat, fish and eggs, high-mercury large fish, unpasteurised dairy, alcohol, caffeine up to 200mg a day, and excess animal liver. GDM mums strictly control refined sugar and sugary drinks while building energy for labour.

A: After the baby engages the stomach space frees up a little and heartburn may ease, but overeating still causes reflux. Eat small frequent meals, chew slowly, stay sitting 30 minutes after a meal before lying down, don’t eat within 2-3 hours before bed, avoid spicy, greasy, overly sweet food and fizzy drinks, and prop up the upper body when sleeping; in severe cases use a pregnancy-safe antacid under a doctor’s guidance.

A: Eat more coarse grains, fruit and vegetables for fiber, drink 1.5-2L of water daily, walk after meals and toilet on a regular schedule without squatting long; warm-water sitz baths help haemorrhoids. Iron supplements can worsen constipation — discuss adjusting them with your doctor; close to delivery, choose a pregnancy-safe medication for severe cases and don’t use stimulating laxatives yourself.

A: The forward centre of gravity and relaxin loosening the pelvic joints, plus the pelvic-floor pull after engagement, make back or pubic-bone pain more obvious. Avoid long standing or sitting, wear supportive low shoes, use a belly-support belt, side-sleep with a pregnancy pillow, do prenatal yoga and pelvic-floor exercises and apply local heat; sharp pain on one side, or with bleeding or fever, needs medical care.

A: Frequent urination, abdominal descent and the tension of nearing delivery disturb sleep more easily now. Use a pregnancy pillow for support, side-sleep, soak your feet before bed, drink less water after evening to cut night urination and exercise moderately in the day; avoid screens and caffeinated drinks before bed, and finishing labour preparations can also boost your sense of security.

A: Frequent false contractions are fairly common in late pregnancy: brief tightening, painless, irregular and resolving with rest. If they become regular, painful or come with lumbar heaviness, seek care to rule out preterm labour.

A: Three categories: maternal items (postnatal pads, nursing bra, toiletries, straw cup), baby items (NB nappies, swaddling, going-home clothes, small hat) and documents (ID, social-security card, prenatal record). From week 36 it should be packed and by the door, ready to go.

A: Pelvic measurement is usually done around week 37 by the doctor to assess pelvic size and delivery mode (one reference for vaginal/cesarean). Whether and how to measure follows your prenatal doctor’s arrangement.