Ok, so me and my boyfriend had sex about a week ago and we had sex 3 times and one day and we used a condom the first time but after that he pulled out. So, now I'm worried that I'm pregnant. Even though he didn't come. I was supposed to start my period yesterday, but sometimes my period is out of wack. And since about 3 days ago I've been feeling like I've always have to pee, pressure on my lower adomenon, my back and sides have been hurting. Do you think I'm pregnant, have a UTI, or my period is just confused? Any help would be very much appreciated.