R.M.
If you have any spot that oozes and itches and hurts, you should get it checked by a dermatologist. They are the ones who know what skin tags and melanoma really look like. Don't leave this to a regular general practicioner, and don't put it off. If it is cancerous, the fact that it is bleeding means that it is advanced. I don't know if it sounds like one or the other, I can't say that is sounds harmless or that it sounds dangerous. I just know I wouldn't take the chance. People do die of skin cancer if it isn't treated.