I have been having very sharp pain under shoulder blade. any recommendations?

Evaluation needed: Very commonly, pain near or around the shoulder blade is not shoulder related at all. Instead, it is most often related to neck/cervical spine related issues. A "pinched nerve" from the neck either from a disc bulge/herniation/bone spur is usually the culprit. The only way to know for sure would require an evaluation from an orthopedic surgeon or perhaps your primary care provider.