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Week 16 · Second Trimester

Your baby is the size of a Avocado

📏 11.6 cm⚖ 100g

At 16 weeks pregnant you're in the second trimester. This week covers your growing bump, baby's first hearing, and the best foods for iron.

This week

Tiny bones forming, baby hears your voice for the first time.

💡 Tip for mom

Talk, sing, read to your bump — baby is listening.

At 16 weeks your baby can now hear muffled sounds from the outside world — your voice, your partner’s voice, and even your favourite music are already familiar. Tiny bones are hardening and the first patterns of hair are appearing.

Common symptoms at 16 weeks pregnant

  • The first flutters of movement (quickening) for some mothers — often mistaken for gas
  • A shinier, thicker head of hair thanks to oestrogen
  • Faster-growing nails
  • Mild forgetfulness (pregnancy brain)
  • A bigger bump if this is your second pregnancy

Tips for week 16

  1. Talk, sing, and read to your bump. Studies suggest babies recognise their parents’ voices at birth.
  2. Add iron-rich foods (leafy greens, lentils, red meat, fortified cereals) to support your growing blood volume.
  3. Start a daily gentle stretch routine to prevent the low-back pain that often shows up next month.
  4. Schedule the anomaly scan if you have not already.

This week's checklist

  • Confirm the anomaly scan booking
  • Choose whether to find out the sex
  • Start a bump-photo diary

Frequently asked questions

When will I feel the first kicks?

First-time mothers usually feel quickening between 18 and 22 weeks. Second-time mothers often notice it as early as 14-16 weeks because they recognise the sensation.

Is the anomaly scan the same as the gender scan?

The 18-22 week scan is primarily a detailed anatomy check. Gender can usually be seen and shared at the same appointment, if you want to know.

Why does my nose feel blocked?

Pregnancy rhinitis is caused by higher oestrogen and increased blood flow to the nasal membranes. Saline sprays, a humidifier, and side-sleeping help.

When to call your provider

Most weeks of pregnancy pass without alarm, but a small set of symptoms always deserves urgent attention. Call your doctor or head to the nearest maternity emergency room straight away for any of the following:

  • Heavy, bright-red vaginal bleeding or the passage of clots
  • Severe headache with visual changes, upper-abdominal pain, or sudden facial swelling
  • Any leaking of fluid before 37 weeks or a sudden gush of fluid at any week
  • Severe one-sided lower-abdominal or shoulder-tip pain (possible ectopic in early pregnancy)
  • Fever above 38 °C, painful urination, or one-sided calf swelling

Where week 16 sits in the second trimester

The second trimester covers weeks 13 to 27 and is often called the honeymoon of pregnancy. Energy comes back, morning sickness fades, and this is the phase when you feel the first kicks, complete the anatomy scan, and start planning practical things — nursery, maternity clothes, and childbirth classes. Week 16 sits comfortably in this window.

Educational content — not a substitute for medical care. Contact your obstetric provider urgently for heavy bleeding, severe headache with visual changes, one-sided leg swelling, upper-abdominal pain, reduced fetal movement, or any concern that feels wrong to you.

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Curated educational content sourced from WHO and Indian Academy of Pediatrics guidelines. Not medical advice.