I've had this same problem maybe once or twice in the past few years, it only lasts maybe for a few hours or a day and goes away.
Tonight I had a prickly burning sensation in the penis urethra and anus at the same time after urination and its going away as I type this (about 10-15 minutes after going to the bathroom). It has me a little concerned and was wondering what the likely cause is. There are no spots, unusual things or mucus at all. Everything seemed/seems normal except for the sudden pain, it wasn't like this earlier in the day.
Thanks.
Edit: oh and I think I should mention that i've never had sex or been sexually involved with someone before.