So my last period was Feb 19th and my boyfriend and I had sex on the 28th 2 or 3 days before I was supposed to ovulate and he decided to ejaculate inside me (sorry TMI) but then on March 4th I started bleeding but it was nothing like my normal periods I had no cramping, bloating, headaches, or anything like that and it was a lot lighter than usual normally my periods are extremely heavy and this one was very light and again no symptoms. Of any kind it lasted about 5 or 6 days and now I'm very confused I don't know what to think could i be pregnant? And I am supposed to get my regular period on the 16th I'm confused can anyone help me?  Any input will be much appreciated thanks ladies