BabyBerry16 Weeks Pregnant
Content last reviewed 2026-08-10.
Your baby this week
Your baby is about the size of an avocado, measuring around 4.6 inches and weighing about 3.5 ounces. A major milestone this week: baby can now hear sounds! The tiny bones in the ears are developed enough to detect noise, meaning your baby can hear your heartbeat, digestive sounds, and your voice. The eyes are becoming sensitive to light, even though the eyelids remain fused shut. The musculoskeletal system is maturing, and baby's movements are becoming more coordinated. The circulatory system is now fully functional, with the heart pumping about 25 quarts of blood per day.
How you may feel
You might feel the first flutters of baby's movement this week — a sensation called "quickening" that many describe as butterfly wings, popcorn popping, or gentle bubbles. Second-time moms often recognize these feelings earlier, sometimes as early as 14-16 weeks, while first-time moms may not notice until 18-22 weeks. Your uterus is now about halfway between your pubic bone and navel, and your baby bump is becoming more noticeable. Increased blood flow to the mucous membranes can cause nasal congestion and occasional nosebleeds. You may feel more emotionally stable compared to the first trimester as hormone levels even out somewhat.
Common symptoms
- You may feel the first fetal movements ("quickening") — like flutters or bubbles.
- Your belly is growing noticeably; regular clothes may no longer fit.
- Varicose veins may appear in your legs as blood volume and pressure increase.
This week's tips
Start talking, singing, and reading to your baby — studies show that babies can recognize familiar voices and even specific stories after birth. This is also a great time for a dental checkup, as pregnancy hormones can cause "pregnancy gingivitis" with swollen, tender gums that bleed easily. Make sure you're getting enough omega-3 fatty acids (especially DHA) from sources like salmon, sardines, walnuts, or a prenatal DHA supplement — these are crucial for baby's brain and eye development. If you haven't already, discuss the quad screen blood test with your provider, which screens for chromosomal abnormalities and neural tube defects.
Eating well
- Eat iron-rich foods with vitamin C — steak with bell peppers, spinach salad with lemon.
- Include whole grains like brown rice, farro, and whole wheat pasta for B vitamins.
- Snack on pumpkin seeds for zinc, magnesium, and healthy fats.
Nutrition focus
- Your blood volume is surging — ensure 27 mg iron daily to prevent anemia.
- Magnesium (350 mg/day) helps prevent leg cramps and supports muscle function.
Everyday wellbeing
- Start wearing maternity clothes — comfort supports better posture and circulation.
- Elevate your legs when sitting to reduce swelling and varicose vein discomfort.
- Continue pelvic floor exercises to prepare for the weight of late pregnancy.
For your partner
Start talking, singing, or reading to the baby bump regularly — research shows babies can recognize their father's voice after birth if they hear it consistently during pregnancy. Even if it feels a little awkward at first, your baby is genuinely listening and bonding with you already. Set aside a few minutes each evening to connect with the bump — tell baby about your day or read a favorite children's book. This is also a great time to start discussing parenting philosophies and values with your partner, so you're aligned on the big topics before baby arrives.
Signs to mention to your provider
- Regular contractions this early (more than 4 per hour) may signal preterm labor.
- Sudden severe headache with blurred vision needs blood pressure evaluation.
- Leaking clear fluid from the vagina may indicate premature rupture of membranes.
Disclaimer: BabyBerry is for general information and self-tracking. It is not a medical device and does not provide medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider.