Ouchy.
Dear Bizi i am not sure if ROM is a good idea for now or if that is how you overdid your arm but i'd sure feel better if the doc knew about it and said outloud that it was OK, and not your PT friend (who also said your cuff was probably torn when in fact you had adhesions).
Trust your friend as you friend, but remember she is not a doc. Use her input to ask your doc questions, not to avoid calling the doc.
i am happy you are feeling overall better - you sound in better spirits.
your collarbone will heal up, at least a week if not 2 are over. (sorry not sure of time...

time is weird for me right now... february feels like yesterday and yet like it was aeons ago too.)
((((hugs)))))
~ waves ~