Basically, my period was on February 4th until the 7th which is normal. I than got it again on February 17th. I than got it again late February 28th into March 1st. The second period was very spotty and short, it lasted like 2 days. This one is crazy its very dark and heavy and it starts and stops. I have had unprotected sex with my boyfriend so Im just worried if it pregnancy, or something else. Has anyone experienced this?

The usual first symptom of pregnancy is a missed period, not multiple periods. I suggest you go to your doctor to find out why you are having so many periods back to back.

Sidenote: The only reason I would suspect pregnancy is my mom and sister both had same symptoms..