Feeling so anxious

This is my 2nd and I have felt pretty good about labor and delivery throughout this pregnancy. But all of a sudden it has hit me that I actually have to go through it all again! I think I blocked out a lot of the pain part of my first experience. I have hit 39 weeks and it has all just gotten so real all of a sudden. I have been feeling so anxious all day... to the point of feeling nauseous. Ugh I guess I’m just looking for some encouraging stories from people who have done it more than once!