hi i am 17, my bf and i had sex for both our first time, and it was unprotected. he did not come in me, infact he only went in me twice with his head and said not without protection. we had sex about 9:30 last friday night. the following saturday i began to have a head ache and stomach ace. on sunday i began to have a mild lower back/ side pain and began to urinate often and had spotty bleeding. monday the pain increased with a head ace but i took next choice on that day, and the bleeding stoped the same day but back pain urination and head ace continued all the way through thursday so i went to the doctor, and all he told me was i have a uti and gave me a shot and some pills. and i have know idea what to think now. and my bf and i are really concerned and want to know if i could be pregnant or not?