i just experienced some sharp pains at the end of my tailbone. The pain is almost crippling when I go to walk. I went to bathroom and found a large split in the skin above my butthole that seems to be 1.5-2 inches long. It starts at my butthole up towards my lower back reaching far enough to cover my tailbone. Feels like I fell on cement and split it. But I cannot remember falling down recently at all. Its a clean wound/split. Painful to the touch and now causing what almose feels like a pinched nerve. I was fine 15 min ago. I'm 21 years old. 175 lbs 5'11. I was just tested 5 days ago for stds hivaids. Only have herpes hpv 2 I believe its called never had an outbreak possibly 2 cold sores I'm elementary school but who knows if its related. What should I do wound is clean no blood no discharge nothing I cleaned it with alcohol.