A member asked:

Doing an iui this month, so i wanted to start ovulation testing early not to miss the time. i had a high surge of lh (almost peak) on day 4 of the cycle. never ovulated that early before. following days it was low. what could cause such early surge?

A doctor has provided 1 answer

If your cycles are still "regular" (24-34 days apart) and an LH surge occurred on "day four" after the end of your previous cycle, and your physician is not using medication to ensure ovulation, this may happen (depending on length of your menstruation, "day four" could really be "day 9-10" if your period was five days long).

Answered 11/23/2021

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