4 Months Pregnant — Weeks 14 to 17
Month four is the quiet stretch — the bump is visible to you, quickening may start, and the anatomy scan is booked. In weeks that is 14 through 17, or days 98 to 125 of the 280-day count. The table below gives every week in the range with its fruit comparison and weight, so you can see exactly where the growth happens.
Week by week
| Week | Size | Weight | Trimester |
|---|---|---|---|
| 14 | a peach | about 2.4 g | 2nd |
| 15 | an apple | about 2.9 g | 2nd |
| 16 | an avocado | about 3.5 g | 2nd |
| 17 | a turnip | about 4.5 g | 2nd |
Appointments in this stretch
| Window | Appointment | What it checks |
|---|---|---|
| 15–20 wks | Quad / anomaly blood screen | Optional blood test for screening risk factors. |
| 18–22 wks | Anatomy scan | Detailed look at baby's organs, limbs and growth — often the sex reveal. |
Frequently asked
How many weeks is 4 months pregnant?
Weeks 14 to 17 — day 98 to day 125 of the 280-day count. Months are a convention rather than a medical unit: four weeks makes ten "months", which is why a 40-week pregnancy is described as nine months.
What trimester is month 4?
The 2nd trimester throughout.
How big is the baby in month 4?
About a peach at the start of the month and a turnip by the end. Weight goes from about 2.4 g to about 4.5 g across those weeks.