Ovulatory cycle (which is a more correct way to call menstrual cycle) is a perfect mechanism that has been created by evolution to continue human life on this planet. It is an instrument of the reproductive system that has its own patterns, meant to fulfill specific tasks, given by the reptile part of our brain.
This is important to understand because whatever comes from the ancient part of the brain cannot be controlled by the modern one (neocortex). It can be understood though.
This article will explain to you what happens to a woman during every phase of the cycle. When we understand what's happening to our psyche and bodies and why, it becomes easier to accept certain behaviors and conditions and be more tolerant to ourselves and others. It also helps to live in balance with yourself planning your life in harmony with your own waves.