I'm so sorry about all the trouble some of you are having with binging lately. I can easily put away 8,000 calories on a binge day and last year, during a30-day period, I gained 30 pounds
It took me nearly 3 months to lose the weight again. 15 came off quickly so that was probably water weight, but that still means I gained 15 lbs of fat.
While we all want to lose weight, sometimes the best thing for binge eaters like us is to temporarily forget about weight loss and just focus on breaking the binge cycle permanently. There are lots of books that can help with this. Try to set up a daily plan, like eating 3 and 2 or 3 snacks at specific times of the day. Eat as much as you need to at these times, but when done, that's it. No more til your next eating time.
Once the binge cycle is broken, then maybe focus on weight loss. It is hard, I know. Believe me. I am only at the end of Week 16 binge free so I know I could fall off the wagon at any time. But I have found that a regular 3 meal/2 snack meal cycle has helped a lot, among other things.