This could be a serious thing. I am not a doctor, but spontaneous bleeding in a chronic alcoholic is not something to take lightly. Keep an eye on him. If it continues, he needs to go. It may not be serious, but it could be deadly. I'm not trying to scare you. In most alcoholic situations, I am one to back off. But chronic alcoholism can cause hemorraging of major organs in later stages. You may want to talk to him when he is sober and ask again if he will see a doctor.
Take care of yourself, Cup. Sounds like you are in the thick of it right now. Get all the support you can. You have mine. Hugs, Magic