Читать книгу Need to Know Fertility, Conception and Pregnancy - Harriet Sharkey - Страница 110

Humans are not highly efficient when it comes to fertility. About 20 per cent of couples will conceive within a month of beginning to try, rising to 70 per cent within six months. After a year of regular unprotected intercourse only around 84 per cent of normal fertile couples will have conceived. In those couples who have not conceived after a year, around