its kinda a long story, here it is. last month sometime. i was prescribed amoxicilin for a case of strep throat. keep in mind i've been on birth control for almost 2 and a half yrs. i was taking the meds for a week. right after i finished them, a bartholins cyst grew on my left labia (painful for a week). my doc said that it grew bcuz the amoxicilin caused new bacteria to grow and fester. they prescribe me with clindamycin 300mg 4 times a day for 10 days. i waited a for a week afterwards to have sex, during that time i had my period. i was off my pills and done with my period a when me and my bf had unprotected sex. he pulled out though( i know it doesnt really work). now its 10 days later. around day 7 after sex i started having strange crampy feelings, feeling a little nauseated, had one day of slight diarreah, and iam still feeling a little crampy and gasyand my brest seem to have gotten bigger. iam really scared because iam gonna start college on saturday and i dont want to be pregnant. if anyone knows anything about early pregnancy, birth control, and antibiotics, please help me. could i be pregnant or jus paranoid?