Menstrual cycle & ovulation
Infrequent periods often mean ovulation is happening irregularly. PCOS is a common cause. It is worth discussing with your GP if you are trying to conceive.
Also known as: oligomenorrhea, irregular periods, infrequent periods
Sources
Last reviewed: 23 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.