I'm such a failure...

So i thought this was going to be the first day of my fast today, aaparently not, i was doing so well, i hadnt eaten anything all day, then i came home, and we were having a big birthday meal for my mothers bithday, i dont even want to think about how much i ate, i worked it out roughly and it was about 900 calories i tried to purge as much as i could but its hurting so much just recently, i have decided to try and burn off 1000 before i go to bed, so ive got 2 hours left to do this, hopefully i can, so far i have burnt 260, another 740 to go, im such a waste of space.