What describes the stage of infertility?

The stage of infertility is typically defined as the inability to conceive after one year of regular, unprotected sexual intercourse for couples under the age of 35, or after six months for those aged 35 and older. It can result from various factors affecting either partner, including hormonal imbalances, structural issues, or underlying health conditions. Infertility can be classified as primary, where a couple has never conceived, or secondary, where they have previously conceived but are now unable to do so. Diagnosis often involves medical evaluations and tests to identify potential causes.