Did you see a physician about the shoulder? I'd be leery of a tear to the rotator cuff, but more leery of surgical repairs, a fellow church parishioner is a retired orthopedic surgeon, he had told several of us to avoid the surgical repair until the pain is just too much to go forward with daily. I hit my left shoulder in a fall from orthostatic hypotension induced vertigo, back in 2010, and it still gives me trouble to this day.
Best of luck with your recovery, I always make sure my bikes' setup is spot on to keep my cycling posture in a comfortable form, and depend on my core muscles to take a lot of the strain and stresses of the arms on my bars. I use 44cm compact Cannondale C3 drop bars with C'Dale Synapse bar wrap, and a 100mm C3 stem with the stack height set to my physiology.
Bill
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Semper Fi, USMC, 1975-1977
I Can Do All Things Through Him, Who Gives Me Strength. Philippians 4:13