18 weeks

If baby is female the uterus starts to develop, the vagina, uterus, and fallopian tubes are in place. Females have a limited supply of eggs in their lifetime. At this point your daughter will have 6 million eggs. This amount decreases to approximately one million by birth.

If it's a boy, the genitals are distinct and recognizable. Even if the sex looks obvious, ultrasound operators have been known to make mistakes.

Baby's legs are reaching their relative size and with the increase muscle development occurring as well, you will start feeling much more than tiny flutter kicks soon. If you have not felt movement yet, you will soon. Your baby will increase its weight by more than 15 times between now and delivery.

Your baby's size is around 6.5 inches (17cm) and 9 ounces (250gm) or the size of
mango or softball.