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There are a number of reasons:
The first is that periods can become irregular and the rhythm of your cycle can change. Also because this method relies on human accuracy there is bound to be error.When estimating the one's rhythm one may not take into consideration factors that will affect it, for example sickness and stress.
It's very easy to get it wrong. If your cycle isn't extremely regular or if you should forget in the moment of passion that you are fertile.
Women have been known to get pregnant at ALL times of the month.
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Can you get HPV using the rhythm method?
Yes you can get HPV using the rhythm method if your partner is infected with HPV.
What are a couple who practice the rhythm method of birth control called?
Many couples are using Natural Methods of Contraception including rhythm method.
What are the disadvantages and disadvantages of least square method?
The disadvantages are that the calculations required are not simple and that the method assumes that the same linear relationship is applicable across the whole data range. And these are the disadvantages of the least squares method.
Disadvantages using cyanmethemoglobin method?
three disadvantages cyanmethemoglobin
What are the advantages and disadvantages of Delphi method in forecasting demand for a product?
advantages and disadvantages of delphi method of group technique
What are the advantages and disadvantages of deductive method?
the advantages of deductive method
What is advantages and disadvantages of distillation method?
The distillation method's advantages are that it will make a pure result. The disadvantages are that the method is time consuming and is not cheap. The distilled method as a result is avoided unless needed.
Can you use birth control pills and the rhythm method at the same time?
The birth control pill is meant to prevent ovulation. If ovulation occurs, the timing will be unpredictable, making the rhythm method useless.
What is the advantages and disadvantages of audio lingual method?
this method is rediculous
Advantages and disadvantages of free hand method?
Advantages and disadvantages of free hand
What is advantages and disadvantages of distillation?
The distillation method's advantages are that it will make a pure result. The disadvantages are that the method is time consuming and is not cheap. The distilled method as a result is avoided unless needed.
What are the disadvantages of this persion wheel method?
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