What should I do about a wound that wont heal?

My prosthetic leg tore a hole in the underside of my thigh. Its been pretty painful since wednesday. It hasn't really healed at all because its in a tough spot. If I sit down, i'm putting pressure on it, or if I stand up there is pressure on it. Even if I lay down if i'm not on my stomach it hurts. I need to have this healed up because i'm a really active person and i'm going to school at the moment. Any suggestions on helping it heal faster? Is there an ointment I can use or something?