Cycle days

Breanna

I was diagnosed with pcos when I was 19 (23 now) and there have only been a handful of times in my life that ive had a period for 2-3 months in a row. With that being said, on this app when it asks you how long your cycle is I just put 90 bc I honestly have no idea how long it is bc ive gone as long as year and half with out a period. So what do you ladies think I should do?