Could be tendinitis
of elbow, get it checked with surgeon. Take ibuprofen 400 mg thrice a day,do fomentation, rub diclofenac
sodium cream on affected area.
If tennis elbow
,cortisone injections infilteration shall help
Your tendinitis shows tendency to connective tissue
Continue with finger exercises but rest your forearm and wrist in a broad sling for 10 days avoiding lifting or movemrnts