Oops. Was forgetting to add - and therefore will make a new post on this aspect, as it is *Important.
NEVER work 'through' a pain level. You can do further damage to the shoulder. IF it hurts, stop, immediately.
Look at 'what' you are doing, analyse the exercise. You may be at the wrong angle (point of compas); trying to go with palm 'upwards'; may be using too much weight too soon (IF you have progressed to using weight aids 'to' the exercise).
Please be CAREFUL.
Now will go check out the info on steroid injections and whatever else I find of interest to add to this rotator cuff thread. Lot of information available, but don't want to swamp y'all...!!
