Hi Hannahalise..I had a quick look at your spark page before I answered. I understand the quick sweet pick me up and the temptation when u are craving.I think that you need to look at why u ate more than u really wanted.
How long was the temptation there? maybe by having a small reasonable sugar fix sooner would help for the next time.
I also have these times and have decided to try and eat either a plain biscuit at 50cals, lowfat yogs at 56cals.If its something sweeter I have been having licquorice dips or a curlywurly ( sorry I am in Scotland ) I am sure you have similar things that u like thats not ladened with caloried and fat etc..
Meantime start feeling better with yourself.U look lovely in your photo. Remember you are looking for the beautiful wedding dress.Picture yourself..smile and go for it.