Hi,

My partner and I are trying to concieve and my periods are irregular from one month to the next and was wondering how do i calculate my ovulation dates to concieve a pregnancy, in june my cycle was 28 days, july was 25 days, august was 28 days, september was 28 days, and october was 31 days, do i calculate the last 31 days to get my ovulation date?

Any help would be greatly appreciated.