Fertility basics
Oligo-ovulation means eggs are released, but not every cycle or not at a predictable time, so cycles are long or irregular. It reduces the number of chances to conceive each year and makes timing intercourse harder.
Also known as: irregular ovulation, infrequent ovulation
Related Canada guides
Sources
- Society of Obstetricians and Gynaecologists of Canada (SOGC) patient information
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.