mine was also a grade I/II separation. since i was 35 and was pretty muscular, my ligaments and tendons didn't move much because of the bulk in the shoulder. in the emergency room a little 90 lb chinese female doctor got up on a chair, took my arm and manipulated it back in its socket (i was on a mix of drugs that left me looking glassy and without memory)

i have only one word of advice for you....
***do your exercises/rehab

anti-inflammatory drugs don't work because it isn't inflammation you feel. And once the SCAR TISSUE grows in you will lose your range of motion if you don't follow up with the rehab (thank you athletico)

do them do them do them.

i was stupid however. it was middle june (softball...don't ask) and i continued to road ride (thank you smooth steel) although i couldn't raise my arm to brush my hair...