Keep in mind that many factors, including medications, stress and illness, can affect the exact timing of ovulation. (mayoclinic.org)
So if you weren't closely monitoring your cycles at time of ovulation, don't be too surprised if you slide into the 41 week mark with a baby bump still in tow. (babygaga.com)
She and her husband could attempt to conceive for months, trying to time intercourse to the most likely time of ovulation. (verywellhealth.com)