The womanâs chance of getting pregnant depends on the fact whether the egg is present in the body or not at the time of intercourse. Based on the menstrual cycleâs regularity and length, this time of ovulation can be calculated.
As per the history given by you, your cycles are of 31 days, and regular. Keeping this in mind if we calculate your ovulation time, it would be between days 8-16 of the menstrual cycle (taking day 1 as first day of the bleeding). So any unprotected intercourse between days 7-18 can result in pregnancy.
Hope this would help.
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