Pain on top of shoulder after reverse TSA and acromial fracture

Hi. I'm new here, and am hoping to hear from others who have had an acromial fracture after reverse TSA. Whenever I search "acromion fracture" on the web I get scholarly papers! I had surgery, was in a restrictive sling for 6 weeks, got out for 10 days and then had severe pain which turned out to be acromion fracture so back in for 5 more weeks. Since I was released the second time I have been doing pt exercises daily and was told to go ahead and use the arm however I wanted. Yesterday I was doing some heavy vacuum cleaning and seem to have hurt something on the top of the shoulder, and now it hurts from there to the top of hand. I'm scared that I might get another fracture with further setbacks!!! I'm a woman of 70 with osteoporosis (so far not too severe). Can anyone relate, reassure, etc? Thanks!