How to define a menstrual cycle

Feb 4, 2021 | Uncategorized

In Chinese Medicine our monthly menstrual cycle is known as our fifth vital sign and we can actually ascertain your overall health based on the health of your period. So in clinic, we spend around 20 – 30 minutes asking you about the health of your menstrual cycle, from the colour of your period to the quality of your flow etc. 

A question we do get a lot is how to work out what day we’re on and I wanted to demonstrate to you, how we define your cycle in clinic.  

Traditionally, a normal menstrual cycle is considered 28 lunar calendar days.
5 = refers to the number of days you bleed 
28 = refers to the total number of days in your menstrual cycle.

You may have heard me ask you “what is the total length of your cycle?”. The total length of your menstrual cycle is calculated from the first day of your period to the day before your next period arrives.

Total length of bleed – Day 1 of your full flow of bleeding is considered the first day of your menstrual cycle. Bleeding lasts an average of 5 days. Also, if your period begins in the evening or during the night then day 1 is taken from the next day.  

Please remember only 15 percent of women actually have a 28-day cycle. That means you’re completely normal if your cycle is between 24 and 35 days.


Amanda is the founder of Angea and has over 12 years of experience working with women to support their health journey. In addition to being a registered doctor of Chinese medicine, Amanda is a yoga teacher and founder of Mindful Pregnancy Yoga Training. Amanda offers acupuncture, Chinese herbal medicine and womb healing treatments at Angea.