Grinding of shoulder..when n how will it be ok?

Shoulder: The sensation of grinding within a joint usually signifies some structural problem within that joint arthritis, tendonitis, bone spurs ; loose boney fragments, etc. Are a few potential causes. Sometimes symptoms may be transient, while other times treatment is necessary. Consultation with your physician or an orthopedic surgeon is recommended. X-rays or MRI will likely be part of the evaluation.

Please see below: This sounds like possible osteoarthritis but if you don't get pain symptoms it could be a normal variant as well. If you continue to have these symptoms, it's prudent to see a doctor.