I have a sharp pain in my shoulder. i can dislocate it and pop it back in. what should i do?

See your doctor: That sounds like an issue you should see your doctor about. Suggest you do so sooner rather than later to try to decrease your chances of long-term consequences.

Get it checked: Sounds like you need that shoulder checked. Possibly some damage or just laxity that may need either some therapy or even surgery.

Shallow shoulder suc: Same problem you have on your hip, shallow shoulder or poor shoulder support, you must see on orthopedic surgeon.

Heat,rest,see Ortho: While heat and rest can help, you may have recurring anterior shoulder dislocation. This can cause progressive damage. Best to see an orthopedist and be checked out.

See an orthopedist: If you can "pop" your shoulder in and out at will without any past history of injury then you may be classified as a voluntary dislocator. Generally nonoperative mangement is advised such as therapy. However, if it becomes unbearable/painful or if you had history of injury resulting in shoulder dislocation then surgery may be an option if non-operative means have failed to control your symptoms.