Being post-surgical, especially if your heart is what has been worked on, can *certainly* make you feel jumpy! That would be normal.
Can you tell us why you are in a nursing home at such a young age?
I do have some heart problems. But I have asthma. I am kind of jumpy all the time. I just had heart repair for a vaulve. I am not taking meds. I am in a nursing home right now. But I don't want crazzzy meds. I am on;ly 50
Can you tell us more about what has been going on? What else have been feeling and when does this seem to happen?
You don't mention a heart problem, but as Carey says, there are hints of anxiety in your message. You will probably get more answers at medhelp's anxiety expert forum:
http://www.medhelp.org/forums/Anxiety/show/1319
Sounds like anxiety to me, not a heart thythm issue. I would take a Xanax if you have any.