Women with irregular cycles have an even greater range of possible ovulation days.

But many women have irregular cycles that are shorter or last longer.

More difficult to practice for women with irregular cycles, after childbirth and at the change of life.

Also, some women have irregular menstrual cycles or stop having periods altogether.

Women with irregular cycles have a wide range of possible ovulation days.

What some women think is an irregular cycle may not be, he says.

Length variation between eight and 20 days is considered as moderately irregular cycles.

Still, women with oligomenorrhea often have irregular cycles as well.

The light turned off a few minutes later, only to come on again in an irregular cycle.

Being a female athlete, if you have few or irregular menstrual cycles due to low body fat.