I don't even know

So my situation is kinda weird. I lived with my boyfriend, moved back to my home state. But in April I went to visit him and of course we had sex. I went to log and noticed it was on my high days. But then two weeks later and I was back home I had my period. Well I think. It was 10 days long and SUPER light. Like one two tampons was good. Which is weird my periods are ALWAYS regular. Then the 7th of this month I had bleeding and some cramping, thought I was starting my period. But it only lasted that day and a little of the 8th. And now my period is a week late. I'm so confused on what's going on.  if I was pregnant I should have a bfp by now, right????