Good article that discusses all the various reasons that a woman can bleed while pregnant. I did bleed early on and thought I was starting my period only to have it stop a couple of days later. I found out from my doctor this was implantation bleeding like what the article describes. Good information here as I hear this question often by women trying to get pregnant.

Good straightforward list about menstrual bleeding during pregnancy. Includes some surprising facts like only 25% of pregnancies make it to a live birth and it's common to not know you were even pregnant to begin with.

Easy-to-read simple explanations regarding why some women might bleed during pregnancy.