Post clomid and ovulation.

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I generally ovulate day 21-22 but the past two cycles i took clomid and i ovulated day 19 and day 17 respectively. I'm taking this month off of opk testing and any other ttc obsession. Do you think i'll immediately go back to day 21-22? or ovulate earlier still? I am still taking metformin. Hoping someone has experience with ovulation after clomid.