it does get depressing when you have (or thought you had) been so good and your levels are still up there. I used to get so down cause i was eating 'boring' foods just to keep my levels down and they still weren't good.But its only a little part of your life and its helping baby (and yourself).
besides i lost wieght after baby due to it so just think of that positive

Pre pregnancy weigh straight after baby - gotta be good