My life so bad since prosthetic shoulder: what should I do?

Second opinion. An artificial shoulder should make you 90% painfree with good motion within three months if it was done appropriately. Please seak the care of a shoulder surgeon for a second opinion.
Diagnosis. You are very young for a shoulder replacement and it would be helpful to know what led to the procedure. We need to get a clear diagnosis for your shoulder pain. also, there are different types of shoulder replacements with different indications:http://theshouldercenter.Com/shoulder-replacement.Htm get a second opinion with a shoulder surgeon.