 [ Symptoms ] what are some common sources of vitamin d [ Disease ] most helpful answer although i cannot offer medical advice and am not in a position to examine your shoulder i can say with confidence if you had a dislocated or separated shoulder you would know it when your shoulder becomes dislocated it means the entire head of your upper arm bone has popped out of its socket not only is this incredibly painful but you would not be able to use your arm you certainly would not be down at the gym throwing weights around a separated shoulder has nothing to do with the bone being out of the socket rather this term refers to a tearing of one of the ligaments that holds the shoulder blade to the collarbone as you might imagine tearing a ligament requires a considerable amount of force it is not something that can happen while you are sleeping it also would be a very painful condition though you would still be able to use your arm many things could have caused the initial soreness and redness you saw in your shoulder sleeping on it wrong comes to mind this could also irritate the skin and cause it to temporarily turn red since you have no insurance i would suggest taking a wait and see approach to your shoulder situation as long as you have no severe pain and no loss of function in your arm you are probably fine wishing you well