Realizing the baby needs to come out one way or another.

Went to my 20 week scan so excited to see my baby found out she was a girl! But when I left I had anxiety all day . even now a week later I'm thinking oh shit this baby is big now she's also in the 94th percentile for her weight and all I can think of is my poor vagina lol I was never nervous about delivery but all of a sudden after seeing her it clicked to me that this is going to happen she's big im over half way and eventually shell need to make her way out, I'm scared lol anyone else have this same panic !?