Day 229 baby development and maternal changes

A: Stress incontinence is common in the third trimester, related to the pelvic-floor muscles being pressed by the growing uterus and relaxin loosening them. Persisting with Kegel exercises (contract 5 seconds → relax 5 seconds, 3 sets of 10 a day) is most effective; you can wear a panty liner. If urine leaking comes with pain, blood in the urine or fever, a urinary-tract infection needs to be ruled out.

A: The calcium need in the third trimester is about 1000mg a day (ACOG view; China’s current DRIs 2023 edition is 800mg a day). Food first: milk and dairy, soy products, tahini and dark-green vegetables; if calcium deficiency is obvious, add a calcium supplement per the doctor, taken separate from iron for better absorption.

A: A cumulative gain of about 10.5-14.5kg by week 33 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.

A: The three measurements at 33 weeks: BPD (biparietal diameter) about 83.0mm, AC (abdominal circumference) about 289.1mm, and FL (femur length) about 61.4mm. 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: Like holding your urine, contract your pelvic-floor muscles (around the anus and vagina) for 5 seconds, relax 5 seconds as one rep, 3 sets of 10 a day. Avoid contracting your abdominal and buttock muscles and breathe normally. Persisting helps relieve urine leaking and promotes postpartum recovery.

A: Most babies have obvious active periods. Since week 28, count fetal movements daily: one hour in the morning, afternoon and evening each; ≥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: GBS (group-B streptococcus) screening is generally arranged at weeks 35-37, sampling with vaginal and rectal swabs. If positive, intravenous antibiotics are given during delivery, effectively preventing newborn infection and not affecting vaginal delivery.

A: The CDC and ACOG recommend the Tdap whooping-cough vaccine at weeks 27-36 so the baby gets maternal antibody and is protected against Pertussis; you’re still in the window this week. Tell them you’re pregnant before vaccination.

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: 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: 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. 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 relaxin loosening the ligaments and pelvic joints. 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: 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: It sorts into three: mum’s supplies (maternity pads, nursing bra, toiletries), baby’s supplies (NB nappies, swaddle, going-home outfit), and documents (ID card, social-security card, prenatal records). Prepare it basically complete by week 34 and keep the list by the door so you can leave at a moment’s notice.

A: More frequent false contractions in the third trimester are common: brief tightening of the belly, painless and irregular, disappearing with rest — the uterus "warming up". If they become regular, with pain or lumbar heaviness down, seek care to rule out preterm labour.