You can only get pregnant at time of ovulation, so aim to have sex every other day during your fertile window - the five days before ovulation and ovulation day itself.
Sex during the rest of the month is great practice, keeps sperm fresh and couples connected, but it won’t make a baby.
Ovulation’s often said to be 12-14 days before your period, or day 14 in a 28-day menstrual cycle. But for most women this isn’t true. Your cycle could range from 21-45 days and you could ovulate on a different day every month.
The most accurate way to pinpoint your fertile window is with an ovulation predictor kit. They test your hormone levels but aren’t always 100% accurate.