I've had a similar thing happen years ago and it was when i was warming up with 225. Felt and heard a few pops and instant pain. Swelled up in a few hours and some bruising set in the next day.
It was a partial tear that didn't require surgery, just rest and time out of the gym.
Your Doctor will be able to tell you very quickly how bad it is.
Has the same thing happen to the long head of my tricep twice.
If you aren't a power lifter, just use DB's on flat bench. I haven't used a BB on flat bench in years and my shoulders feel a lot better. The vast majority of pec tears happen while doing BB flat bench.
