3rd day of healthy eating

Today has been quite tough. Not so much during the day but say after 5pm I started to really crave for something sweet.  Today I have consumed: Yoghurt and cereal (brekkie) 2plums a couple of hours later, soup for a late lunch at 4pm, pk of 2 go ahead bars at 5.30pm whilst watching my soups, another plum, then a later dinner at about 7pm had a subway then half of a cookie. I have been drinking water aswell throughout the day and just finished with a hot choco there the now, still full after that subway.  Felt a bit guilty about eating that half cookie but it was only half so not too bad! I did say that I was cutting out ALL junk food... I guess I haven't really... but thats nothing really I don't think half a cookie, I could have been greedy! hahaha.  I NEED to get rid of this stomach!!! It's soo annoying! It's just so bulgy! I really really HATE it! I have to do more exercise however I think that could be the problem. Even if I could at least do a half hour walk every day! That would be a start. I need to do something.