You are now in 4th week of your pregnancy and the fetal age is 3 weeks, 6 days.
At the end of week 4 of pregnancy, baby (fetus) has an average length of about 0.1 inch or 2.5 mm measured Crown to Rump (CR).
Find fetal growth in 4th week or fetal growth week-by-week or fetal development in 1st month or in First Trimester.
First trimester starts on very first day of your last menstrual cycle on 25-Jun-2025 and ends on 17-Sep-2025
Second trimester is from 18-Sep-2025 to 31-Dec-2025
While Third trimester begins 01-Jan-2026 onwards.
The expected date of birth of your baby is 01-Apr-2026, however depending upon fetal growth and your age, the baby may be born between 18-Mar-2026 and 08-Apr-2026.
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