Which day is the least fertile out of all? Is it the first day of menstruation? : r/FAMnNFP

When are the most fertile days?

What is happening this cycle : r/FAMnNFP

What going on with my most recent cycle? I'm not ill and my last

When Is a Woman Most Fertile?

Can a woman get pregnant 22 days after the first day of her period

At what point during a woman's cycle is she least likely to get pregnant? - Quora

Need help. 14DPO according to FF. No (real) period yet & BFN. : r/FAMnNFP

Ovulation cycle - MEDizzy

What is the Calendar Method?