Why is the luteal phase of the menstrual cycle always fixed to 14

Why is the luteal phase of the menstrual cycle always fixed to 14

Why is my menstrual cycle all over the place at age 41? - Quora

How does one calculate the different stages of the menstrual cycle

At what point in the menstrual cycle do women go into heat? - Quora

What is the luteal stage of the menstrual cycle? - Quora

How to lengthen my follicular phase - Quora

How does one calculate the different stages of the menstrual cycle

How to know how long my menstrual cycle is - Quora

What is the introductory physiology of the menstrual cycle? - Quora