HEy Shelby,
it definitely could be related with your eating disorder. When you've suffered from it for a long time, it becomes very irregular, you can also be like 2-3 months without it, then it comes again, you can also spend long periods of time without it, etc.
As long as you're trying to recover from an
ED, don't worry too much about it, because once you're okay, you'll get it back
