Reffering to the natural family planning chart it determines approx days of fertility with respect to 28 days of menstrual cycle.But how can these be determined if the no. of MC days are varied . My wife periods are delayed by 10 to 15 days ery month.

There are several different

There are several different types of natural family planning, and only a few rely on the length of your menstrual cycle. The sympto-thermal method relies on several body signs, and fertility computers that you can order from overseas measure the amount of hormone in the urine.

If your wife has an irregular cycle, your best bet may be the new TwoDay method. The TwoDay method is a new fertility awareness technique developed at Georgetown University. To use the Method, women monitor themselves each day to determine whether or not they experience any secretions that day. If so, they avoid sex for that day and the next. All other days are considered infertile, so it is safe to have sex on those days without getting pregnant.

You can learn more about the TwoDay method here:

Best of luck,
Dr. Williams

Monnica Williams, Ph.D.
Sex Education Advisor.

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