I was doing military shoulder press with barbell. I was on 3rd set when I brought the weight down... just as the bar got to my chin there was a loud SNAP and pain shot from my left shoulder right across my collar bone all the way to my right shoulder. I was able to push the weight back up and rack it. I slowly reached up to my collar bone thinking I was going to feel bone sticking out of skin. There was pain more like "sore" pain from left shoulder rt across collar bone. I debated on calling it a day but figured I would try again. I lowered the weight and was able to do another set. Yes there was pain but no strength loss. I rested for 3 days then went back to gym today and while on incline bench press when I lowered the weight to chest once again my left shoulder and collar bone became very painful and even swelled up. no snap this time. Anyone have any Idea what this could be? I was guessing ligament over stretch or strain. anyone ever have this?