Ok so my boyfriend and I had sex and nothing broke or anything but I am a very cautious person so we got the (MAP) and took it the next day. When I took it I had received my period around 18 days prior so I was expecting to get it soon, how ever this was not the case. Around 3 days before my period was due I had a light short period that was light brown and short and then my period has failed to come. We had sex on August 13th and it's currently August 28th! is it normal not to get your period after or for it to have early bleeding??? I took a test but it came back negative but I am not really experiencing my normal PMS! what do you suppose I do?