I have shoulder pain that feels better when i exercise but the range of motion is limited. what could it be and should i stop excersing.

Gentle exercise OK: Maintenance of range of motion is always a laudible goal as long as your pain is not made appreciably worse. Orthopaedic surgeon evaluatin will efficiently elucidate the underlying pathology. More common possibilities include: adhesive capsulitis, subacromial impingement (bursitis), a partial thickness rotator cuff tear, and/or underlying mild to moderate shoulder joint arthritis.

Frozen shoulder: May benefit from medication and physical therapy. Avoid exercises that over stretch the shoulder but exercise is okay.

Multiple pos causes: A physician needs to examine you, ask a few mor questions and possibly do some tests to give you a helpful answer.