My mom is 6 months post-op Aortic valve replacement. She has been on rest until last week. She started cooking and few days back (to get back to her old life). And suddenly she woke up with a very bad right arm (shoulder area) pain. She’s unable to lift her arm at all. There’s no pain when there’s no movement. But the pain seems to be unbearable even if she’s moves her arm a bit. Its been more than 2 days since this started and pain killers don’t seem to work. Could this be related to her heart or a reg muscular pain caused due to inactivity for a prolonged time. Apart from right arm pain, she has no other issues.