Implantation bleeding is an early sign that the embryo has implanted in the uterine lining, but it can easily be mistaken for menstruation.

Implantation bleeding during pregnancy refers to the light spotting or bleeding that can happen when a fertilized egg attaches or implants itself to the uterine lining. “As the fertilized egg burrows ...

For many people, a missed period is the first signal that they're pregnant. However, this often isn't the first sign of pregnancy your body gives you. From hormonal changes to swollen breasts or ...

You cannot have a true menstrual period during pregnancy. When you conceive, ovulation stops and the uterine lining stays in ...