Tracy - - I forgot to say how sorry I am your shoulder caused you such grief ! It sounds like it was downright miserable . I am so very glad you found out the cause and are getting it back to being right! Isn't it mind-boggling the different things that can cause us agony ???
Somehow I knew you'd say that, Rhea ! Strength would be a better option than cardio, IMHO . But promise this time you'll listen to your body - AND eat something so you don't get a low blood sugar, too .