When is the best chance for a lady to become pregnante.?? Is it before or after your period.??
This tool assumes you have somewhat regular cycles -- meaning you don't have wildly erratic periods, sometimes many months apart (as can happen for many reasons including perimenopause): http://www.ahealthyme.com/topic/ovulationcalc
Take care !!
The timing method isn't always accurate - each woman is different.
Any woman who is trying to conceive would be better off using the temperature method with a basal thermometer.