I had sex on march 30, mostly protected and when it wasn't, he had already cum outside of my body then a few minutes later, went back in for about a minute. Then I got my period a week later, it was early. I'm not sure if I ovulated after that period and now my period is two days late and I have no symptoms that it's even coming, should I be worried? I mean I did get my period after but why was it early? And why am I late now? I haven't had sex since then.