When a couple lives together, has regular sexual intercourse without contraception for over a year, and does not conceive, it is termed infertility. If it concerns the female, it is called infertility, and if it concerns the male, it is called sterility. If a woman has previously been pregnant or has a history of childbirth or pregnancy, it is known as secondary infertility. If she has never been pregnant or had a childbirth, it is considered primary infertility. The same categories apply to males: those with a history of fathering a child, regardless of with which partner, are described as having secondary sterility, whereas those who have never impregnated a woman suffer from primary sterility. To diagnose infertility or sterility, one needs to undergo relevant medical checks at a hospital's reproductive medicine department. These examinations include ovulation monitoring, endocrine tests, gynecological examinations for women, and semen analyses and fallopian tube inspections for men, among others.