You had a period october 1806 and your cycle is every 25 days when conception date?

To calculate the approximate conception date, we need to work backward from the start of your last period. Since your cycle is every 25 days, we can assume that ovulation occurs around day 14 of your cycle. Counting back 14 days from October 18, 2006, we can estimate that ovulation happened around October 4, 2006.

Fertilization typically occurs within 24 to 48 hours of ovulation. Therefore, the conception date would likely be around October 4-5, 2006. However, it's important to note that these calculations are estimates, and the actual conception date may vary slightly.