Conceiving w/ late ovulation -- increased risk of birth defects?

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Conceiving w/ late ovulation -- increased risk of birth defects?

Hello Dr. Grunebaum,

Does conceiving with late ovulation lead to an increased risk of birth defects? I have PCOS, and my menstrual cycles are irregular, varying anywhere from 28 to 45 days. This cycle, I ovulated on day 25, and I'm worried about there being a heightened risk of birth defects if I conceived this cycle. I've read some information/studies indicating that longer follicular phases are associated with a significantly increased risk of birth defects and miscarriage due to egg quality and/or endometrial lining quality being poor when ovulation is delayed. Could you please inform me of your thoughts on this issue? I am very worried and upset, and I hope you can shed some light on this issue.

Your assistance would be greatly appreciated. Thank you very much for everything you do.

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https://www.babymed.com/is-late-ovulation-a-problem

There is no scientific evidence that late ovulation increases fetal malformations. It increases the risk of a miscarriage or implantation failure but not the risk of a fetal malformation.

Thank you, Doctor. I really appreciate it.