am I pregnant??

So a couple of weeks back me and my boyfriend had unprotected sex in a car(january 19th) and he ended up ejaculating into me because I kept going and apparently didn't hear him when he announced he was about to. Oh and I was in my fertile stage. I was ovulating two days(january 21) later.  6 days before my period was due (February 4th) I took two tests. One when I got it and the first thing next morning. They were both negative. My period was due yesterday but it hasn't arrived and again today. I feel tiny cramps on and off again but no bleeding. What's going on?