To project ovulation through the menstrual cycle, it is required that the period must be basically normal with a cycle of about 28 days. With a normal menstrual cycle, a period on the 24th should result in ovulation around the 10th. If the period is a few days shorter, it will be a few days earlier, for example, if the period is a 26-day cycle, ovulation should also be 2 days earlier, almost on the 8th. If you want to conceive through ovulation, you can have intercourse between the 8th and 10th. If you want to conceive through ovulation, you should not have intercourse during this period as it is the absolute danger period between the 6th and 14th.