okay. i am 15 years old and my boyfriend is 14 and we have been going out for a while now. we both talked about having sex but we didnt want to risk anything because we both agreed a child is the last thing we need at the moment. so we both did research online to find out about ovulation and things like that to decide when the safest time would be to have sex. my ovulaiton began last tuesday and for most people it lasts 3-4ish days. since my cycle is only 21 days it should be shorter. but we waited a week just to be sure. so we had sex on monday and we used a condom and things should be fine. the only thing is today is the day after, and i've had this weird sensation right where my uterus is and its not like pain but its sensitive when i sit down or when i like poke it. it could be all in my head but could i be pregnant if we used a condom? should i be worried?