My shoulder surgery was also work related but thankfully I didn't have the problems your having.
Post surgery was painful as rehab was too. I was out 3 months before I got released to go back on light duty.
Now that I'm retired I try to keep somewhat fit and I notice shoulder pain if I overdo reps also some pain when humidity is high (old wives tale that seems true).
That was also my first true surgery and I hope the rest of my parts last until it's time to go. [Beer]

