Fist of all, I am so sorry for what you're going through...I have been there more times than I can count so my heart goes out to you
The best thing you can do is get back on track the next day! Even if you're not hungry, make sure you are eating small meals/snacks throughout the day or else like you said you will be binging at night, which will keep the cycle going. I always drink a TON of water all day as well, it will help ease your belly and release the bloat/sick feeling that you have.
Just stick with a healthy meal plan, get plenty of water and put the previous night behind you...leave the binge and guilt in the past where it belongs