Hi , This is a sex question . I recently got checked for an std but my pee results came back and the doctors didn’t find anything. She recently got tested also and she was GOOD 100% healthy. I had sex with my girlfriend while she was on her period. It was rough sex and i received a burn from friction. Well i got oral sex from her then i had regular sex with the friction burn. it was bumps and ulcers like herpes or syphilis . could i maybe have an std ?