TRIGGER WARNING: EATING DISORDER

I keep trying to recover, but always relapse. Maybe it’s because I’m trying to recover completely by myself. But anyways, I got my period back this month, but it triggered me (if I get my period, it means I’m too fat, failing, etc..) so I’ve been fasting like crazy, 2-3 days at a time. When I was “healthy” (still had disordered thoughts) my period was generally 3-4 days, maybe even 5 sometimes, with 2-3 days of spotting after. I’m two days in and my period has mysteriously stopped. Does this have to do with my relapse? I didn’t think eating disorder behaviours could stop the period DURING? Or is this mere coincidence?