Ovulation

Ovulation follows a surge of luteinising hormone (LH) and is what turns the emptied follicle into a corpus luteum that produces progesterone. It typically occurs about 14 days before the next period, not necessarily on day 14. Regular, predictable periods usually mean ovulation is happening; confirmation can be made with a mid-luteal progesterone blood test.

Also known as: releasing an egg, ovulating

Last reviewed: September 9, 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.