Hello there... the good news for you is your body responded to whatever treatment or therapy you took and u r pain was reduced....you yourself mentioned that bcos of workout your pain has started....it means you strained your muscles without proper warmup & doing exercise after gap of many months,,,may be you did more harm to your shoulder in that spurt of moment.....for the time being tendonitis or a muscular microtear in any of your shoulder muscles seems to be a possibility which can be ruled out through an MRI scan.
In the mean time,,,you can do hot water formentation to your shoulder 5 times a day....and before sleeping you can apply any diclofinac based gel to get temporary relief from symptoms.
Regards & take care.
Answered2016-07-09 06:39:55
Let others know if this answer was helpful