So I Went On A Trip To Fiji And Very

so i went on a trip to Fiji and very stupidly had unprotected sex. i am not studying abroad in New Zealand until November so i had to go to the closest doctor. i got what i believe was trichomoniasis, but he prescribed me three different antibiotics to cure an array of STD's. this doctor told me to stop taking my birth control and now (4 days later) i started to bleed a little. I was nearing my period anyway, so i am hoping i am bleeding in result of messing with my birth control. it does not seem like my regular period blood though. when i urinate, the blood visibly flows out in a dark stream, almost like a clot but again, it comes in streams.