I am a 19 year old male. For about 4-5 days now, I've been having pain around my anus. The pain began after a rather intense bowel movement. Since the pain began, sitting, shifting position in bed, and many other simple movements bring moderate pain. Pain is made worse with a bowel movement and with an erection. Pain has been made better with exercise, a hot bath, or by passing gas. I would like to know possible conditions, the severity of each, and treatment.