A couple of days ago i had sex with someone i barelly knew,at forst we used a condom but then for some stupid reason he took it off, he couldnt maintain an erection,2 days after my vagina started smelling bad and i had itching and redness on the outside,i douched and drank some antibiotics (difulcan) but the itching and the redness havent gone away...Im scared it might be an STD... please can someone tell me what it might be???? I need an answer soon... THANXS