16 Weeks Pregnant

Baby’s Development

Fetus ~11.6 cm (avocado), weight ~100 g [1]. Eyes functional but still sealed — baby can sense light, eyes move side-to-side. Ears developed — baby hears muffled versions of mom’s heartbeat, voice, digestive sounds, and external noises (loud music, dad’s voice). Facial muscles very active: grimacing, squinting, frowning, possibly smiling. Skeleton ossifying. Nervous system functional — baby makes coordinated movements. Grip strength strong enough to hold umbilical cord. Movement: distinct kicks, stretches, somersaults [2].

Pregnancy Symptoms

Energy high, symptoms generally mild. Common: round ligament pain, backache, heartburn, constipation, bloating, headaches, leg cramps, nasal congestion, possible nosebleeds. Quickening for many — first flutters/kicks. “Snissing” (sneeze + pee) common. Sex drive often strong. Skin: linea nigra, melasma, possible “mask.” Hair thicker, nails faster. Heartburn may worsen as uterus pushes stomach [2].

Body Changes

Uterus ~halfway between pubic bone and navel. Weight gain: 5-10 lbs by week 16 typical. Bump visible. Possible visible blue veins on breasts, legs. Possible spider veins/varicose veins. Breasts: 1-1.5 cup sizes up. Heartburn can be persistent. Possible first signs of stretch marks [2].

Tips for Week 16

• Quad screen (15-22 weeks) — optional, screens neural tube defects + T21, T18. If NIPT done, often skipped. Discuss with OB.
• Schedule anatomy scan (18-22 weeks) — most detailed ultrasound: brain, heart, spine, kidneys, limbs, sex (often visible at 18+ weeks).
• Start talking/singing to baby — at 16 weeks, baby hears you. Voice recognition, language exposure, oxytocin for both of you. Doesn’t need to be elaborate.
• Document quickening — date, time, what it felt like. Many parents forget the exact first kick moment; journaling helps.

Things To Do (Checklist)

• Decide on quad screen (vs. NIPT only)
• Schedule anatomy scan for 18-22 weeks
• Start daily “talk to baby” practice
• Journal first quickening date
• Discuss sex reveal preferences with partner

Frequently Asked Questions

Q: When will my partner feel the baby kick? A: Typically 24-28 weeks (after anatomy scan). External hand on belly can feel it. Depends on placenta position — anterior placenta (front) muffles kicks [1].

Q: Why am I snoring? A: Pregnancy rhinitis — estrogen causes nasal swelling. Saline spray, humidifier, pregnancy-safe decongestants (with provider OK) help [2].

Q: Is it OK to have sex? A: Yes, low-risk pregnancies can throughout. Some report mild cramping after (orgasm contractions). Stop if painful, bleeding, or provider restricts [1].

For Dads

• Talk to the baby daily — even 30 seconds. Read a book, share your day, sing. They recognize your voice after weeks 25-30. Builds bond.
• Hand on belly during quiet moments — be ready for first kick. The moment dad feels it = a different level of “real.”
• Make a “first kicks” record — date, time, what mom felt, your reaction. Photo/screenshot the moment. Future you will love it.
• Read The Expectant Father Ch. 9-10 — second trimester deepening, your relationship with the baby.
• Pray for hearing and recognition — voice activation, language processing, brain-ear connection forming.

Sources

1. ACOG — How Your Fetus Grows During Pregnancy
2. Mayo Clinic — 16 Weeks Pregnant
3. Expecting Better — Emily Oster (Chapters 9-10: Second Trimester)