I put in 31 days :) since your periods are between 30 and 32 days apart. Also, some ovulation calculators might be more generous than other and give you a bigger fertility window.
i just used and ovulation calculator and i got 8/21-8/31 why is it different did u put in 28 day 30 days of 32 days?
i agree with shveps you shud see the ovulation calculater to know when is the right time and also i heard there a ovulation strip online too. Good luck
There are many ovulation calculators online you can use that help you determine when your most fertile time is. The one I just did said Aug 23 - 28. If you want to find out the exact day you ovulate, you could try ovulation prediction kits or charting your basal body temperature. Good luck!