Are you sue it is actually scapular pain?
Or where exactly do you feel it & what does it feel like?
Could it be the rhomboids underneath the scapula?


I sometimes get a deep achy burning under the edges of the scapula & it is the rhomboids.
They are actually a fairly weak muscle and can be overstretched/fatigued by having the shoulder forward posture - that's when they start to burn and hurt.

I can get rid of that pain easily by doing the ball stretches or laying on the foam roll & paying better attention to my shoulder postures.