Sending you and yours prayers for healing and strength.
I don't know how you feel regarding your son and his care, because I was blessed to never have to worry a minute about my daughter, but I have had a triple bypass and I know some of what you will face ahead.
Rest, move when you can, and take good care of yourself. Oh and if you have pets keep a pillow with you because they seem to aim for your chest! LOL
Blessings for a swift and full recovery.