Fertility basics
The fertile window is roughly the five days before ovulation plus the day of ovulation itself, because sperm can survive in the reproductive tract for several days while an egg lives less than a day. Having sex every one to two days across this window is usually enough; rigid timing is not required and can add pressure.
Also known as: fertile days, best time to try, ovulation window
Related South Africa guides
Sources
- ESHRE/ICMART glossary of assisted reproductive terminology
- ASRM patient information
Last reviewed: 8 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.