Recovered anorexia periods

Hi so I am a recovered anorexic. (Not a son story but needed for the question) for a long time, about 8-10 months, I was not eating enough to get my period. It's now 11ish months after recovering and I have only had my period about 3 times. When I get it, it's very heavy an everything I normal but I was wondering if my eating disorder could explain this?