Hi Indigo!
What you're experiencing is extremely normal, and I go through periods of the same thing.
Rapidly switching between restricting, bulimia, binge eating, etc.
The psychiatric term for it is 'EDNOS' (just newly changed to 'OFSED' but not a popular usage yet) which stands for 'Eating Disorder Not Otherwise Specified'.
It basically mean you don't meet full criteria for one ED, and that you may practice behaviors from two or more eating disorders.
I was diagnosed with EDNOS last year, and I sympathize with you very much because it is HELL. And very hard to understand. . . but recovery is possible if you ever chose to go in that direction.
I believe its harder than having just one problem on your plate (no pun intended ) but very much possible!