If I have sex, I use a condom. Every time. However, I occasionally receive oral sex and it's always unprotected. 3 weeks ago I received oral sex from a girl who said she was clean. I only last about 2 minutes, it was over. 4 days later I noticed a rugburn type mark on my penis. Looks exactly like penile psoriasis when I google it. Doesn't hurt, doesn't itch. I then began to have a slight burn in my urethra. Not when I urinate, but just casually throughout the day. And sometimes when I ejaculate. Not bad, but a little. I've had some discomfort in my lower back off and on, and some discomfort in my abdomen off and on. I also have some fairly painful pain and swelling in my testicles. Not always at the same time, but they both hurt. I've had this pain for 2 weeks and it's more on, than off. The swelling comes and goes, but mostly off. I've been taking 500 mg of cipro-something that a dr gave me for what he thought was a UTI. I did not show him the rugburn as it had started to fade and I wasn't concerned anymore. I've been taking the cipro for 6 days. Also, I had a shot of penicillin as I had strep throat at the same time as the perceived UTI. That's a lot of strong meds in my body for a week, yet I still have urethra pain and testicle pain. As you can imagine, I'm terrified that I picked up an STD from my 2 minute BJ. Although I received other BJ's from girls in the weeks earlier. Any advice is greatly appreciated.