The dear doctor prompt why sometimes monthly there are three days day do not go...

[Albina]

The dear doctor prompt why sometimes monthly there are three days day do not go and then again go day (I accept tri-regol) whether the truth what is it ripen at once 2 jaitsekletki.

[Pasenjuk A.M.]

On a background triregola they at all sozravajut. It is such variant of norm or rate.