My dad has A-fib. He has previously had a heart attack.. then got the A. fib and it went away when he had the d-fibrulation procedure. It came back however a couple months ago and he was feeling faint and was hospitalized. Now he is feeling sharp pains that come and go in his heart but he doesn't want to go to the Emergency room. Should I make him go? Is this something that needs to be taken care of right away?

Take him immediately.