I was suppose to start my period wednesday or thursday and instead started tuesday. I am on the pill but missed a couple in my pack, and before I had started this most recent pack my bf and I had unprotected sex where he pulled out. So we were pretty much completely unprotected since i hadn't started my BC yet. Well like i said my period started tuesday, but it was incredibly light and was brown like at the end of your period. It only lasted 3 days. usually my period is moderate flow with cramping and last 5-6 days. This was completely different. No cramping, light bleeding, started early, and ended early. Idk if its just a normal period or if it was implantation bleeding. I took a test on Friday and it was negative...but i was told it may have been too early to test. is it possible that im pregnant?