Doctor's appointment eve

My doctor's appointment is tomorrow morning and I'm starting to get anxious.  I'm worried that my bloodwork/exray aren't going to be normal..As far as I know I am fine.  I have no symptoms, but there is still that nagging thought that its going to come back and the closer I get to my appointment the worse it gets.  It's not like worrying will change anything, but I just can't get myself to stop.  I wonder it if is always going to be this way.  Am I going to feel like this every 6 months/ year for the rest of my life?!  I wish I could just let it go, but that's not really who I am.  I am a worrier, just like my mother, just like my mother's mother, maybe it's genetic, which unfortunately means that there is no hope in breaking the cycle.