It sounds like you're doing all you can to prepare for the special big day! Don't worry too much, they can pick up/smell your emotions. Mimi was 5.5#'s & she delivered 5 beautiful healthy pups ranging from 3-4 ozs. Since Chanel gained almost 2 #'s, I'm wondering if she's got a couple in there?
Congrats & best of luck to you & your Chanel!