I really need help, I'm making an appointment with my family doctor, but I've had the lump for 2 years, and recently in the last few months its gotten bigger and now my hand/forearm has been going numb. my hand has been numb since last night and I can feel the lump when I put my arm down. It's not pimple like, its pretty big. I'm not sure what it could be, but it's not hard, its in the middle I guess. Any insight before I see my doctor would be awesome.