Hi, I have a small pea sized lump near my anus towards the back and on the inner side of my right butt cheek. It does not hurt. I noticed it about 1 week ago when I was wiping my butt in the bathroom. It is not really visible to the eye as most of it is under the skin and doesn't stick out. It does not have an opening so it can't be a pimple. What could that be? I believe it was during my ski vacation that I fist noticed it, could it be sport related? I am worried.