Do I have herpes or something else?

Okay I had unprotected sex with a guy one night (I was overly intoxicated). We had sex for a minute or so till I told him to get off of me because I was realizing that I was making a huge mistake. A couple days later I started getting flu like symptoms (swollen neck lymph nodes, headache, fatigue) and I also became very itchy down there, with a thick clumpy white discharge. At first I didn't want to believe I caught anything from this guy so I took regular cold medicine and I thought the discharge indicated a yeast infection so I took an over the counter medication for that. All the symptoms had gone away, but now a couple months later I have met a new guy and we've had sex a couple of times. (very painful for me btw) We've used a condom every-time but one time he put it in without a condom on for like a second or 2, a couple days later he gets flu-like symptoms. I'm really paranoid now because I think I have herpes and I think I gave it to him :( do you think I do?