I am 20 years old, and 16 days ago I got a little too drunk and hooked up with an Austrian girl while studying abroad in the Netherlands. We had unprotected sex only for only a matter of seconds before I realized how stupid it was and stopped. She says the only unprotected sex she has ever had was with her boyfriend of three years, both of whom were virgins at the time, and that she has only had one other sexual partner since then and no history of STD's. Or so she says. A few days ago i noticed some very minor swelling in the top haft of the shaft of my penis but no discomfort or pain. Later that night, after masturbating, I felt some pain in the penis and burning while urinating, which I know are normal after masturbation and has happened before, but never lasted more than a day, even after more vigorous masturbation. I also noticed a tiny bit of clear discharge the next morning. Now, I still have pain in the top of my shaft and tip including the opening, almost like the urethra is sore, and slight burning when i pee sometimes. I have also had some testicular soreness or tenderness on and off. I did suffer a muscular groin injury in the hernia region a week ago, but I'm not sure if that would affect genital areas, as the injury seems to be healing. Also, I have what I am almost certain is a chafing pimple on my inner thigh near the scrotum, but I thought I would add that information just in case.The skin is not tender on the penis and there is no redness or abnormalities. I also had some brief sciatica pain, which apparently can be related to herpes, but it was only for a few minutes and then subsided. I plan on going to the doctor as soon as possible, but I will not have access for a few days at least. The pain is not enough to stop me from sleeping or performing daily activities, but is definitely something I have not experienced before. I have no history of any STD or genital disease. Any thoughts or ideas as to if this might be a type of infection?