Introduction/Questions

Hi I have been looking around this site for the past year or so just reading everyones posts. I've had HS since my junior year of highschool ... at least that's as far back as I remember. So this has been about 6-7 years at least. I had surgery Friday on my left armpit. When I woke up the surgeon sad that she had to go deeper into my armpit than she originally thought she would have to and she had to put a drain in my armpit. Everything I thought was fine, except for I've been able to lift my arm less and less each day because it's more and more painful ( I was told to lift my arm above my head as much as I could). Should this be getting more painful each day? I would think it should be less painful. Also a yellow colored (sort of like puss) came out of my armpit today, is that normal? I've called my surgeons office already, but am patiently waiting a call back from them. So any information you guys can provide is greatly appreciated.