(3) Where, in an appeal under this Act, a penalty assessed by the Minister under this section or section 163.2 is in issue, the burden of establishing the facts justifying the assessment of the penalty is on the Minister.
The number of days in your cycle is calculated by counting the number of days from the beginning of one period to the beginning of the next period. If you have a short cycle, for example 21 days, and you bleed for 7 days, then you could ovulate right after your period.
1 If you have irregular menstrual cycles but know when you ovulate, look for your period about two weeks after you ovulate. That may help you keep an easier track of your periods.  Perimenopause. Perimenopause is the period of time where you are transitioning from reproductive age to a non-reproductive age.