Oh hun, I wouldn't worry too much about it at the mo. Are you b/f? I ate so much junk it was silly. I just got to a point when J was about 2 months old that I had to lose some weight as I still couldn't get into my normal clothes.
I think a lot of will power & determination is required. I find when I get into the swing of it it gets easier, its just the first few days that are the hardest coz as soon as you say no, you want it even more