 [ Symptoms ] can conception occur at day 17 of the cycle [ Disease ] the answer is yes ovulation occurs midcycle but cycles can vary from month to month as can the day a woman ovulates this can vary from between day 11 to day 21 one way to determine ovulation is through a home kit which predicts a surge in lh the hormone that triggers ovulation the most fertile days are those beginning with this surge and within 24 36 hours after you have determined that you have ovulated