Amasing story! It is so nice to read a plot, which is a bit different than all the other James/Lily stories .
Well i can tell you that you first start pushing, when you are 10 cm open. Before that the contraction is to make room for the baby. Afterwards when you push, well you push the baby out (: Beside that it's a really good story and very funny. Can see both Ron and Hermione act like that.
Author's Response: Thanks for reading and reviewing :) Thank you! Yeah, my (poor) excuse for Ron saying push before that is that he didn't really know and was saying he thought was the right thing to say. Glad you enjoyed it though!