I Had My Period For The Month Of February And

I had my period for the month of february and then I had another one feb 26- march 2nd. My cycle is usually 28 days. March 4-5 I had unprotected sex multiple times with my boyfriend. I still haven't gotten my period yet. I just experienced watery mouth so I ate. I think I am pregnant. If i wear belts they hurt my stomach even when i wear it loose. I have been urinating frequently even if I haven't dranked any water