Buddy of mine said you got hurt...that is horrible man. I suggest buying some ThermaFlex from the nearest feed store or just from google. I've also heard good things about NeedTo's balm as well although I've never used any myself.
Probably a fiber tear...which heals but hurts and doesn't require surgery. You still have a pec there, which is a good thing. The ThermaFlex will help a lot with the pain and the healing process. Do you have any bands? I'd be doing one armed band chest press all the time with as little tension as possible to keep everything moving in there.