Fertility basics
During perimenopause cycles become irregular, hormone levels fluctuate and fertility declines steeply, though pregnancy is still possible until periods have stopped for a year. Symptoms such as hot flushes and sleep disturbance are common. Fluctuating hormone tests in this phase are hard to interpret, and one FSH result should not be used alone.
Also known as: menopause transition, climacteric
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.