Hi Sanjeev,
Thanks for writing your query.
It seems that you had a muscle pull at your shoulder joint.
You should give proper rest to your shoulder. Do not lift heavy weights from that side.
Pain killers like
Diclofenac 50 mg twice a day after meals along with antacid like
Omeprazole 20 mg along with
muscle relaxant like
Tizanidine 2 mg twice a day for 5-7 days will provide some relief.
Take medicines under medical supervision only. Hot fomentation and application of local pain relieving gel will be helpful.
Physiotherapy is very beneficial in such cases.
If the problem persists, get yourself examined by an Orthopedician.
I hope this is helpful to ou.
Thanks.