Over new years I cheated on my girlfriend. I did not have sex with anyone, but ended up making out with a girl. We were both in our underwear, and the underwear never came off. Two days after this I had unprotected sex with my girlfriend. A few days later I started to notice a slight urethral irritation. Now, every time I urinate I am feeling a burning sensation and the urge to urinate more frequently. I don't know if it is related to the urethral problem, but my stomach is also upset. It might be from the stress. I have no discharge or any other symptoms. Just a slight urethral itch/pain that comes off and on, and escpecially when I urinate. So I have a few questions. What are the odds that I could have gotten an std through what was basically "dry sex"? there was genital contact, but only through underwear. If it IS an std, what are the odds that I gave it to my girlfriend when we had sex two days after my possible exposure? (this was several days before symptoms occured). Lastly, when my girlfriend and I had sex, we also had anal sex. Could this cause a UTI? Or is there anything else that causes general urethral discomfort, plus burning while urinating and frequent urination? Thank You.