Day 200 baby development and maternal changes

A: The big scan (20-24 weeks) focuses on screening structural malformations (brain, spine, heart, limbs, internal organs, lip and palate, etc.); the small scan (30-32 weeks) focuses on assessing fetal growth, amniotic-fluid volume, placental position and maturity, fetal position, and umbilical blood flow. They serve different purposes and both are needed — you can book this one ahead from this week.

A: The small scan is generally arranged at weeks 30-32, and popular hospitals likewise need advance booking. It looks at how fast the baby grows, whether the amniotic fluid is normal, the placental position and whether it’s low, and whether the fetal position is correct — an important monitoring scan of the third trimester.

A: A cumulative gain of about 8.5-12kg by week 29 is common. For a standard BMI, the third trimester is about 0.4-0.5kg a week and the whole pregnancy recommends about 11.5-16kg. Watch the overall trend and manage by BMI with a weight-gain calculator; discuss too-fast or too-slow gain with your doctor.

A: Since week 28 you should count fetal movements every day: one hour in the morning, afternoon and evening each, lie on your left side or sit quietly and record; generally ≥3-5 an hour or ≥10 within 2 hours is normal. If it’s clearly under 10 in 2 hours or down by more than half from usual, seek care immediately.

A: Itching from abdominal skin stretching is common and moisturising can relieve it. But be alert: if the itching is all over, especially the palms and soles, worse at night and without a rash, seek care immediately to check liver function and bile acid, ruling out intrahepatic cholestasis of pregnancy (ICP) — it can affect the baby and must be handled early.

A: The Chinese Nutrition Society recommends about 85g a day in the third trimester (roughly 80-90g). Give priority to quality protein: fish, eggs, lean meat, soy products, milk — for example 1 egg + 300ml milk + 100g fish/lean meat + 100g tofu totals about 40g of quality protein, and pairing it with the rest of your food in staples covers the day’s roughly 85g. Don’t rely on meat alone — pairing with soy products is more balanced.

A: A growing belly, frequent urination and trouble turning over affect sleep. Use a pregnancy pillow for support, sleep on your left side, soak your feet before bed to relax, reduce evening fluids to cut night urination, and exercise moderately during the day. Avoid screens before bed and caffeinated drinks.

A: Most babies gradually turn head-down from this week and the position starts to become relatively fixed, but still has room to change. Only after week 30 do you need to focus on the position; if it’s breech or transverse, the doctor will assess knee-chest exercise or external cephalic version later.

A: The three measurements at 29 weeks: BPD (biparietal diameter) about 73.3mm, AC (abdominal circumference) about 246.7mm, and FL (femur length) about 53.4mm, reflecting head, abdomen and leg development. 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: If there’s 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 term, the more caution in the third trimester; pause if unwell or the doctor advises against it; seek care for post-sex bleeding, pain or leaking fluid.

A: ACOG advises women without complications about 150 minutes of moderate-intensity exercise accumulated weekly (walking, prenatal yoga, swimming), split over 5 days at about 30 minutes a day. In the third trimester focus on walking and stretching; avoid intense exercise and pressure on the abdomen; stop and seek care for pain or bleeding.

A: Yes. The CDC and ACOG recommend the Tdap whooping-cough vaccine at weeks 27-36 so the baby gets maternal antibody to prevent Pertussis; the inactivated flu vaccine can also be given in flu season. Both are pregnancy-safe vaccines; tell them you’re pregnant before vaccination.

A: When a cramp hits, flex the foot and massage the calf; prevention relies on supplementing calcium and magnesium, drinking water and stretching before bed. For swelling, raise your legs, lie on your left side, walk to promote return flow, and moderately limit salt. If swelling suddenly worsens, spreads to the face and hands, or comes with headache or vision changes, check blood pressure to rule out preeclampsia.

A: Avoid raw or undercooked meat, fish and eggs, high-mercury large fish, unpasteurised dairy, alcohol, caffeine over 200mg a day, and excess animal liver (excess vitamin A). If you have GDM, strictly control refined sugar and sugary drinks as well.

A: Eat smaller meals more often and chew slowly, sit or stand for 30 minutes after meals before lying down, avoid eating in the 2-3 hours before bed, avoid spicy, greasy, overly sweet food and carbonated drinks, and prop up your upper body when sleeping. In serious cases, use a pregnancy-safe antacid under a doctor’s guidance.

A: Eat more coarse grains and vegetables for dietary fiber, drink 1.5-2L of water daily, walk after meals, and toilet regularly without squatting long; soak in warm water for haemorrhoids. Iron supplements can worsen constipation — discuss an adjustment with your doctor; in serious cases choose a pregnancy-safe medication rather than a stimulant laxative.

A: It comes from a forward centre of gravity and ligament relaxation. Avoid long standing or sitting, wear supportive low-heeled shoes, use a belly-support belt, side-sleep with a pregnancy pillow, do prenatal yoga and pelvic-floor exercise, and apply local warmth. Sharp pain on one side or with bleeding and fever needs care.

A: It sorts into three: mum’s supplies (maternity pads, nursing bra, toiletries, straw cup), baby’s supplies (NB nappies, swaddle, going-home outfit, small hat), and documents (ID card, social-security card, prenatal records). Prepare it in batches from weeks 28-34, basically complete by week 34, and keep the list by the door so you can leave at a moment’s notice.