Fear of Labor

I'm 34 weeks and the doctor keeps saying that he feels like he's not going to stay in until my due date(June 15th) and I'm so excited!! But then I stop and think, the reality sets in of actually having to go through labor and push my baby out. I'm so scared, this is my first baby and I've never been so scared of anything in my life. Obviously I'm not the only one but how do I mentally prepare myself for labor??