Dear Zinny to get the more "fertile" dates - you can use a Ovulation Calculator to measure the dates, read here: https://www.babycentre.co.uk/ovulation-calculator  https://lovematters.in/en/our-bodies/ovulation-calendar-how-to-calculate-ovulation If you would like to join in on a further discussion on this topic, join our discussion board, "Just Ask" . https://lovematters.in/en/forum