I pulled something in my right (bowling) arm a couple of weeks ago.  Pain in the middle to the top of the inside of my bicep.  Tried to throw a couple of balls last night, did OK for about 9 frames then had a big pain.  Hurts when I pick the ball off the rack.  No pain when I do anything else, just with a bowling ball.  

Anybody had an injury like this before and know what it is?  How long to get over it.  I have a teammate on nationals who did something like this 4 years ago and had to lay off a whole year.  I don't know if its a tendon, muscle strain, tear or what.