Doctors are scaring me a little.

Snyder
My due date is June 10 and I am a small girl but have been told that it doesn't matter how small you are when delivering your baby. Both the Drs that I have told me that my pelvice is very small and they are concerned that my son is too big. They scheduled a sono for the 8th to see how big he is. I'm not against natural or c section but them saying that my pelvice is small scares me. What do you guys think about this?