If your pain seems to be coming from a muscle a few days off should help.
I'm no doctor but I've shot bows for 35 years and as a younger guy I shot hevy bows. Recurves in the 80 lb range. I've had my share of shooting pains.
Pain on the outside of the shoulder of the drawing arm always went away in a few days for me. I've known guys that had pain coming from shoulder joints.
I think joint pain needs more than just time off. I think something in the way that person shoots needs to change to lessen the affect on the joint in question. Maybe stance, draw weight, duration of practice sessions.
Here is what happened to me last year. I fell 20+ feet, while putting up a stand....I won't get into how it happened.............Other than to say that 33 years of bowhunting from trees finaly caught up with me in spite of my saftey measures.
Besides the broken foot, I found that I had pain in my left shoulder when I drew the bow. Yeah........never mind the foot.... I can't draw my bow!....
Any how, being right handed, I figured it was pain from compression of the joint. I consulted with my doctor about it and the x-ray shows no broken parts or chips. Buy the way, He also enjoys the outdoors and under stood why I climbed back up to finnish the job after I fell. He said an MRI was the only way to see tissue damage. I decided to see if time would heal it.
I sewed a pocket on the inside of a T-shirt right over the shoulder in pain. I put hand warmers in side it to keep my shoulder limber enough to draw and shoot. Eventualy the pain went away.
Listen to pain, It's what we were born with to tell us when enough is enough. You're a young guy. Think of it like weight lifting. You have to let the muscles heal before the next workout.