I tracked that I got my period on the wrong date? How do I change?

If you tracked your period on the wrong date, you can easily delete the record. Once you've removed the incorrect data, outlined below, simply use either the Period or Menstrual Calendar to add your period on the correct date(s).

Method 1: Use MyMonthlyCycles Period Tracker to delete a period record. To do so, simply go to the Period Calendar, and click the period day (shown in pink) and the record will deleted.

To remove multiple days of period days with the Period Calendar, simply click on each period day. If a message indicates you can not delete due to additional data being stored, you can quickly go to the menstrual calendar by clicking on the calendar's month/year link.

Method 2: Use MyMonthlyCycles Menstrual Calendar. Edit the date cell in the calendar that has the menstrual period day you want to remove. At My Events, click Period Edit. On the edit screen, click the Delete button.

To delete multiple menstrual period records while on the edit screen, you can use the mini navigational calendar on the upper right of the period edit screen. The nav cal will show menstrual period days in bold. Click on another period day, and then click the delete button to remove.


  1. When you delete a data record, it's permanent, so make sure you are removing the correct record.

  2. Either track just the first day of your period, or all days. Tracking just the first and last day should not be done, as MyMonthlyCycles will assume the last day is another first day and this will adversely affect your average cycle length calculation. For complete details, refer to our FAQ Can I track just the first day and last day of my period?

  3. If you delete the first day of your period, your average menstrual cycle length will be automatically re-calculated. Further, if you had tracked each day of your period and you delete the first day, the following day becomes the first day of your period for that cycle.

Disclaimer: All information provided is for educational purposes only. It is not intended as a substitute for advice provided by a medical doctor or qualified healthcare provider. You should not use this information for self-diagnosis or for treating a health problem or disease. If you have any questions whatsoever about your medical health or believe you have a medical problem or disease, you should contact your medical doctor or healthcare provider. You should never disregard medical advice or delay seeking medical advice or treatment because of something you have read in this glossary. No guarantee is made about the accuracy, completeness, or relevance of the information contained herein.