Okay so my boyfriend and I had sex on the 26th unprotected. He pulled out and he didn't go back in after. I have had a UTI since Wednesday and finally made it to the doctor on Sunday to get antibiotics. I was supposed to start my period on Saturday and have not yet gotten it. I usually get cramps the day before and I haven't had any cramps. My question is, could I be pregnant or is this normal with a UTI and taking antibiotics?