I am 17, a senior and about to go off to college. Me and my boyfriend had sex one time around 4 weeks ago. I'm On birth control, he used a condom, and it was my first time ever so it didn't last long and he didnt even ejaculate. I've had an achy back but I've always had problems because I'm a volleyball player and always have back problems. I keep getting a pain in my stomach That feels like I'm being stabbed , also I've been really nauseous but I've been really nervous and stressed latley so I didn't know if that could be why. I've Also been getting really hungry ALL the time, but I'm 5'10 and the doctor said I'm not done growing so maybe I'm going through a growth spurt? I didn't think pregnancy was a possibility because I've had a really heavy period sense we had sex, but I started taking my birth control regularly again and it stopped but now I've been spotting off and on and I've been on birth control for about 6 months now and never even spot, usually. I didn't think this could be a possibility because we were so careful but my sister who is 16, heard all my symptoms and she asked if it could be a possibility if I was pregnant. I also had a UTI that keeps coming back, if I haven't taken care of it like I should, could these symptoms be a sign of an infection I'm my kidneys or somewhere else from the UTI? Also I thought maybe a stomach olsar could be a possibility because their was a time period when I got these stomach pains a little bit before I had sex. Could pre-cum be an issue maybe? An the only reason im scared is because i didnt take my birth control regularly and I know that increases the risk. Someone please help me, Thankyou