Not sure if this will still be useful to you, but I thought I'd share some of my experiences.

After a dinner or later binge, I usually wake up in the morning just feeling gross. Mostly in my stomach, but sometimes all over. If I binge multiple nights in a row, the feelings in the morning are more intense.

I'm no longer bulimic, but I was consistently for about 1 year (2013). I often experienced awful stomach cramps, as well as feeling very full and nauseous every time I ate, even if it was just an apple. The feeling full and nauseous has continued past my bulimic days, but has gotten steadily better, with some flare ups here and there.

One common things, bulimia or not, if I'm binging/skipping meals, etc, my digestion is all off - to the extreme. Either bad constipation, diarrhea, or gassiness.

I hope this helps!