Another thought...
I have had a similar problem which I initially attributed to hemroids. Went to the Doc after it didn't subside after 3 months (yah, I know that's a while). As it turns out, it was not hemroids at all. Rather, I had a small tear in the poop chute (and, yes, that is the ACTUAL medical term) brought on by deep, heavy squats, and deads--in theory, as I ruled out any and all external causes.
The Doc recommended that I consider surgery and time off. He also said it would likely heal on it's own with time. That being said, I felt no need to have ASS SURGERY, and elected to ease up on the weights for a while until it could heal.
In total, the problem lasted for about 6 months. It would eventually go away just as the Doc has said. However, over the 6 months, I endured a great deal of nervousness, as well as 6-8 trips to the crapper every day. No pleasant experience, I wust say.
My advice:
GO TO THE DOCTOR. Get the ass problem looked into by someone who looks into ass problems for a living, say Kosmo Cramer, The Assman, and go from there.