Ovulation needs to happen before natural fetilisation is possible. An egg can't be fetilised in the ovary, so in order for pregnancy to occur, an egg must be fetilised and then successfully implant in the wall of the uterus, (which has been thickening up in preparation).
If the egg isn’t fertilised, the body sheds the lining of the womb, along with the unfertilised egg and a period begins, along with a new cycle.
So to find out when you're ovulating based on the date of your last period, try our ovulation calculator and take a look at these 19 facts that you need to know about ovulation!
1) The average cycle
The average cycle for a woman is 28 days, but your cycle can be anything from 22 to 36 days long. Ovulation normally happens about two weeks before your next period, so if your cycle is 28 days, you will ovulate around day 14. Work out when you are ovulating by using our ovulation calculator.