Week 16: Bones Strengthening
Baby is about the size of Avocado (117mm crown-rump)
The skeletal system is hardening from cartilage to bone (ossification). Your baby's facial muscles are developing, allowing practice expressions like frowning and squinting. The circulatory system is fully functional, and the heart pumps about 25 quarts of blood per day. The nervous system is forming myelin sheaths around nerves.
You may feel the first flutters of fetal movement ('quickening'), especially if this isn't your first pregnancy. The uterus is about the size of a papaya. Increased blood flow can cause a stuffy nose and occasional nosebleeds. You might notice your hair looking thicker.
What is important now
In the US, a 16-week prenatal visit is typical. Second-trimester blood tests (AFP/quad screen) may be offered between weeks 15-20. If you haven't felt movement yet, don't worry — first-time mothers often don't feel it until weeks 18-22.
Common symptoms
- watery vaginal discharge gush — contact provider immediately
Wellness this week.
Nutrition
Bone mineralization support
- Continue calcium and vitamin D
- Phosphorus-rich foods (meat, dairy, legumes)
- Protein for muscle and tissue development
- Fiber to prevent constipation (common around now)
Exercise
Movement
Maintain regular activity; consider pelvic floor exercises
Sleep
7-9 hours
Position: Side sleeping; pillow between knees for alignment
· A firm mattress or pregnancy pillow can help with emerging back pain
· Gentle stretches before bed ease muscle tension
Mental wellness
Mindfulness
If you haven't felt movement yet, that's perfectly normal. Each pregnancy is different.
“Your baby is making tiny facial expressions — practicing for the smiles to come.”
Your timeline.
Week 6
10 weeks ago- routine
Checkpoint 1 — Mutterpass may be issued upon heartbeat confirmation
Week 19
In 3 weeks- routineWeeks 19–22
Checkpoint 2 — Screening Ultrasound
Choice between a basic biometric scan or detailed organ scan. Measures head circumference, abdominal circumference, femur length, and checks placental position.
GoalAssess fetal anatomy and growth, check for structural abnormalities, and verify placental location.
Week 28
In 12 weeks- routine
Checkpoint 1 — GDM screening
- routine
Checkpoint 2 — Rhogam if Rh-negative
Week 29
In 13 weeks- routineWeeks 29–32
Checkpoint 3 — Screening Ultrasound
Third and final routine ultrasound. Assesses fetal growth, position (cephalic/breech), amniotic fluid volume, and placental function.
GoalConfirm appropriate growth trajectory and baby's position for delivery planning.
Week 35
In 19 weeks- self pay igelWeeks 35–37
Checkpoint 1 — GBS Testing — Self-pay/IGeL
Rectovaginal swab to screen for Group B Streptococcus colonization. If positive, IV antibiotics are given during labor to prevent neonatal infection.
GoalIdentify GBS carriers to enable prophylactic treatment during delivery.
Safety: A gush of watery vaginal fluid could indicate premature rupture of membranes. Contact your provider immediately if this occurs.
Your journey, your rhythm.
Track your pregnancy week by week with gentle, personalized guidance.