When it comes to starting a family, timing is everything

A new Cochrane review of methods to increase chances of successful
conception suggests that timed intercourse using urine ovulation tests
probably improves live birth and pregnancy rates in women under 40 who
had been trying to conceive for under a year.
...
...
Each month there is a narrow window for successful conception due to
the limited lifespan of the sperm and egg, which begins from around
five days before ovulation (egg release) and lasts until several hours afterwards.

https://www.eurekalert.org/news-releases/1001579

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