Am I obsessive/paranoid about this?

To be honest, it sounds like you are turning yourself into a hypochondriac. I think that when a person tells themselves they are sick, or have this problem, they can actually develope signs or symptoms of it without actually having anything wrong with them. So chill out, doc's say your fine, then your fine. Are you going to waste all of your time feeling like there is something wrong when there isn't? Enjoy life a little. Go out and do something fun. Maybe have another drink and convince yourself that it will cure your problem....