Fertile window for four age groups. Probability of conception is

Can You Ovulate More Than Once A Month Or Cycle?

Figure 3 from study cycle : day specific estimates from a

Fertile window for four age groups. Probability of conception is

Ovulation Calculator: Track Your Fertile Days

Findings from a mobile application–based cohort are consistent

Can You Ovulate More Than Once A Month Or Cycle?

Births in Australia Australian Institute of Family Studies

Full article: Darwin's Legacy: An Evolutionary View of Women's

U.S. Women More Likely to Have Children Than a Decade Ago