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my doc does the IUI the day after the LH surge is detected. i've heard that the LH surge usually occurs in the wee hours of the morning. i detected mine on Sunday around 2 pm. i had my IUI done around 10:30 am on Monday and i noticed that my temp spiked this morning. so i probably ovulated sometime Monday through Tuesday morning. so shouldn't the IUI have been done earlier for optimum timing?