Fertility Calendar

Cycle tracking and timing of conception

This Ovulation Calculator will help you work out the best time to try to get pregnant this month, your Fertility Window. These are the best days to have unprotected sexual intercourse if you want to fall pregnant naturally.

Sperm can survive in the fallopian tubes for about two or three days, so you should start about two days before the woman ovulates.

Read more about how the menstrual cycle and fertile window works.

Expert Tips When Planning for Pregnancy »
Try our Pregnancy Predictor tool »
Learn more about Virtus Fertility Centre »

Back to top