Off birth control pill cycles 31-65days help!

Joanne
Hi!
Anybody experienced something similar? Been off microgynon since June of this yr. had usual withdrawal, spotting 2 weeks later then a period. No period in august or October then the last period came 10dpo. Not sure if I'm not ovulating or missing them due to excess exercise and stress. But I don't know where im up to now! 
Thanks!