I could just DIE!!!!

Hi everyone. I finished day 13 yesterday, but didn't come off the diet the right way. Instead of starting off slow and building myself up to eating right, I went out and just gorged myself last night. I went to Tumbleweed and started out eating just a chip, then it was another chip, then another. Before I knew it, my hunger was so ravenous, that the waitress couldn't bring the chips/salsa fast enough. Then I ate a regular meal. Stopped on the way home and got ice cream. Then had a candy bar before bed.
WHAT THE HELL IS WRONG WITH ME!!!!!! Why, Why, Why, do I try to kill myself like this. Now what do I do??? I don't know whether to take a laxative, because I'm afraid of what I just did to my poor stomach, or just wait to let things pass. Anyone's help would be greatly appreciated.