I had a cyst removed about ten years ago that ran the full length of my butt crack (don't know the medical name for that LOL), and today I noticed the area was kind of tender. So thinking it was something else went to the bathroom to clean it and noticed blood on the toilet paper, it wasn't a huge amount of blood but significant enough for me to be a little concerned. Is some light bleeding from old an surgery common, or should I get it checked out?