At 16 weeks pregnant, you are in the second trimester and often described as about 4 months pregnant. Week 16 follows 15 weeks pregnant, and the next step in the calendar is 17 weeks pregnant.
Your baby may be about 12-16 cm long and weigh around 80-100 grams, although size estimates vary. The baby is moving more actively, with more coordinated arm and leg movements, periods of activity and sleep, tiny nails forming, thumb-sucking movements and the ability to turn the head.
If your mid-pregnancy anatomy scan has not been scheduled yet, this is a good time to ask about it. Many providers arrange this detailed ultrasound around 18-22 weeks of pregnancy, though local timing can vary.
You may start to feel the first baby movements around this stage. They can feel like bubbles, flutters or tiny taps. Many first-time parents do not feel movement until later, often closer to 18-22 weeks, so not feeling kicks yet is common.
Your uterus is growing and moving higher in the pelvis. Some people notice stretching, pulling or brief sharp pains on one or both sides of the lower belly as the supporting tissues stretch. If pain is severe, persistent, one-sided with bleeding, or you feel unwell, contact your midwife, doctor or maternity unit.
Progesterone can slow digestion and relax blood vessels, which may contribute to constipation, heartburn, dizziness or feeling faint when you stand up quickly. Drinking fluids, eating fibre-rich foods and changing position slowly can help.
Progesterone is a pregnancy hormone that helps support the uterine lining and relaxes smooth muscle. It can also slow digestion and contribute to constipation or heartburn.
Fundal height is the distance from the pubic bone to the top of the uterus. It is commonly checked later in pregnancy to follow growth trends.
Anatomy scan is the detailed mid-pregnancy ultrasound that checks the baby's development, placenta position and amniotic fluid.
At 16 weeks pregnant, your baby is growing, moving more actively and developing more coordinated arm and leg movements. Nails are forming and the head can turn.
Size estimates vary, but the baby may be about 12-16 cm long and weigh around 80-100 grams. Ultrasound measurements can differ depending on dating and growth.
Some people feel first movements around 16 weeks, often described as bubbles, flutters or tiny taps. Many first-time parents do not feel movement until later, closer to 18-22 weeks.
16 weeks pregnant is in the second trimester. In month terms, it is often described as about 4 months pregnant, although pregnancy months are not counted as neatly as calendar months.
Progesterone can slow digestion and relax blood vessels, while your growing uterus can affect bowel function. Fluids, fibre and slow position changes may help; ask a clinician if symptoms are severe.
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