I couldve written that exact post when I was preg with DD2 I remember one night bawling my eyes out and Df trying to comfort me!
It is a big change and I found that my DD1 who always was my baby suddenly seemed to change overnight to this big girl when I actually did have DD2.
Now its like there was never a time with just DD1 and I, she seems to just think DD2 has been around forever!