i took a shot of test cyp 6th week on im taking 500mg a week, i injected in the shoulder and everything went smooth, 2 min after the shot i yawned and stretched my arms my should started burnin pretty bad and a lump formed i rubbed it out as much as possible but still a lil lump when u feel my shoulder... i doin my workout and i reached up to grab the bar (doing back) and when my shoulder stretched the burn came back wsup with this??