Sometimes we think. if I can just hang in there, it will get better.
Unfortunately, if it is rotator cuff impingment like what I experienced, it may result in a tear if you don't let it heal. A least, that is what my therapist said would happen and a tear means surgery in most cases. This injury is fairly common in our sport and in baseball.
In my case, when the right arm was raised to start drawing the bow, it hurt in several spots, front, top and in the deltoid muscle. Eventually, just raising the arm in a drawing motiion resulted in some level of pain.
If you stand in a doorway, with your arms hanging straight down, push against the door jam with the back of your hand and see if it hurts. Or, try raising the arm above the shoulders or head. Again, if there is pain, you should get it checked.
The good news if you catch it before it tears, you should get better with rest, therapy and exercise. The latter is necessary to strengthen the rotator cuff. My routine is exercises one day and rest the next.
In case you are not sure what the rotator cuff is, it is like a cup formed by the muscles from the chest and back at the top of the arm bone in the shoulder. It protects the arm bone from grinding in the socket. When it becomes irritated by continually jamming into the socket, the muscle become weaker with time and the condition worsens. Hopefully all it takes is rest and rehab. Even if your problem is different than what I have described, it could still be a rotator cuff.
The therapist was a great help and it would have been better if I had gone in to get it checked sooner.
I feel lucky, mine is about 90% after 2 1/2 months of rehab. It should be ready to start practicing soon, just in time for fall hunting season. Good luck.