Is there a chacne you can ovulate sooner than the 24-36 hours on ovidrel. I have pcos and also take femara (letrozole) cd3-7?

LH surge. The only way you could ovulate before that time would be for your body to release lh to trigger ovulation prior to the Ovidrel shot. This is called an lh surge.
Yes but low. I guess there is always a chance. But generally when you take the Ovidrel the timing is very accurate, .

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