Last Thursday, I woke in the middle of the night with a rather painful erection. I peed and the erection went away, but the pain is still there. Kind of an ache in the bottom left side of the penis, not far from where it attaches to the scrotum. Ejaculation and urination are normal (no pain or burning), but erections are still painful, and I feel a dull ache when I cross my legs. I also notice having to pee a lot more than usual, and I'm waking up most nights to pee right at 2:30 a.m. (kind of early for me - usually I can make it through most, if not all, of the night).
Could this be prostatitis? Or is it possible I somehow injured my penis by sleeping on it weirdly? (I wasn't in my usual bed, so maybe it was the mattress)
I should mention that 10 years ago, I had a hernia in the very same area and it was repaired with surgery.
I'm 37 and otherwise am in good health. I made an appointment with the urologist for Friday.