Hi. I was with a girl. We were in bad, naked, kissing for 10-15 minutes. During kissing, we hugged and rubbed our bodies one in the other. Even there was some penile to vagina contact (no penetration), just some rubbing on the outside. After that we had protected vaginal sex. On next day she told me she feels a tiny burning sensation down there. I told her not to worry because a) I am clean b) we used condom c) it's too early for any symptoms of STD. She said ok, but at evening, roughly 24 hours after our sex, before going to bed, I had a little burn when urinating. I didn't think it's something, but it continued on the next day, and the next and the next. 4 days now since we had sex and I am starting to worry. It's not exactly burning, it's just some weird "feeling" and it's also present when not urinating, I steel feel like there's something on the tip of my head. What could this possibly be? I didn't have any STD before the contact, because I was tested, also no symptoms.