When does a woman start to show she is pregnant?

A woman typically starts to show signs of pregnancy around the second trimester, which is about 12 to 16 weeks into the pregnancy. However, this can vary based on factors such as her body type, whether it's her first pregnancy, and individual differences. Some women may show earlier, while others may take longer to visibly display a baby bump. Generally, by 20 weeks, most women have a noticeable belly.