Proceive® Ovulation Calculator
A regular menstrual cycle it is 28-30 days. Ovulation occurs once a month – between day 12 and day 16 from the start of your period. After ovulation, an egg lives for 12 to 24 hours and it needs to be fertilised during this time. Once fertilised, it will travel through the fallopian tubes and attach itself to the womb lining after about 5 days. As sperm can survive up to five days while your egg survives for one day, this means that the fertile window is judged to be six days – five days before ovulation and the day of ovulation.
Please use this calendar to help calculate the days you are ovulating.
Tracking your cycle can help with fertility. To give you the best chance of getting pregnant, our ovulation calculator tells you when you're most likely to be fertile. Enter the first day of your last period and how long your cycle usually lasts (between 20 and 45 days). We'll show you the best days to have sex that could lead to pregnancy – so you can mark your calendar.
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