Binge Eating

Sorry in advance. On days like this I ramble a lot. Even in writing.

I feel absolutely disgusting. I have struggled with binge eating since I was 9. I have been doing better, but once in a while I'll have a relapse and when I do, I can't help but get extremely depressed. I have a 5 month old son and I want to get better, but on days like this...I can't see that "getting better" in sight. I almost always eat healthy and exercise, but today I ordered a pizza, lava cakes, and hot wings and I ate almost ALL of it. I feel like a failure as a mother and a failure to myself when I have these days. How can I teach my son to be healthy when I can't even commit. The thing is, this will go on for a day or two and then I'm back to normal. It doesn't happen much (maybe once every 2 to 3 months). Anyone else go through this or have gone through this?