Last month me and boyfriend did it on the 6th of August I got a UTI infection on August on the 12th and got my period on the 14th of august and it was a regular heavy period my UTI lasted tell around the 22nd while I had the infection I was taking bactrim medicean . Now this month I was suppose to start my period on the 10th and i didnt , now I'm 4 days late I'm starting to get scared and worried if I got my period last month I can't be pregnant right ? We had unprotected sex once he didn't cum inside me AT ALL until he started feeling like he was he started wearing a condom and it didnt brake at all i checked the outside .. My question is , is the bactrim Medicean the reason why my period is late ? Plus he knows when he's going to cum , that's when he puts on a condom on , but my question is , is the Medicean causing me to get my period late ? Or am I prego ?