I would take Ibuprofen when the pain is bad...at least 400mgms in one go.
My opinion would be to "monitor the situation for at least a couple of months as it is usually self limiting.......i.e it will go away in time.
If the pain does get bad, then there is always cortisone injections around the shoulder capsule, but i would use that as a "trump card " for later..if necessary.
Take the Ibuprofen, do the exercises, suffer the pain and reassess the situation in about 6-8 weeks.