How to calculate your menstrual cycle: simple, easy to apply!


Date: 19/09/2023

Table Of Contents

Understanding how to calculate the menstrual cycle will help women monitor their own health as well as detect abnormal changes in the body.

In today’s article, Émer shares with you an extremely simple policy to calculate the menstrual cycle. Let’s discover more!

Mastering how to calculate your menstrual cycle helps you understand your health and your fertility

What is the menstrual cycle?

The steps in the menstrual cycle are triggered by the rise and fall of chemicals in your body called hormones. (essential for reproduction).

Menstrual cycles occur every month between puberty and menopause. “Strawberry shedding” is a natural phenomenon in the cycle that occurs in healthy women during the period between puberty and late reproductive years.

Menstruation is a sign that a woman is not pregnant. During the menstrual cycle, an adult woman’s body releases an ovum (one or two eggs).

Before this happens, the endometrium will cover the entire surface of the uterus in a synchronized fashion. After ovulation, the endometrium immediately changes to transition to the process of fertilizing an egg and forming a pregnancy.

If fertilization is unsuccessful, the uterus sheds its endometrium and a new menstrual cycle begins. Normally, the average menstrual cycle of women will last 28 days, in some cases it lasts from 25-35 days.

Why do you need to understand your menstrual cycle?

Understanding your period will help you determine your ovulation days. If you experience a delay in your cycle, menorrhagia, etc., you might need to check your endometrium and see a doctor for an accurate diagnosis and timely treatment.

Besides, tracking your menstrual cycle will help you calculate the ideal time to get pregnant. On the contrary it will also help you know when you should avoid having sex on the days of ovulation if you don’t want to have a baby.

In fact, women in puberty often have problems with menstrual disorders. But growing up, the body will adapt and get more stable periods.

However, if these disorders or pains persist until you are 20-22, you should see a doctor and consult a doctor as soon as possible.

How to calculate the menstrual cycle, your ovulation day 

Do you want to increase your chance of having a baby? Émer “unveils” for you how to calculate the menstrual cycle to determine the day of ovulation.
More specifically:

1. Body temperature measurement

When having your periods, drastic changes in hormone levels affect body temperature. During this time, a woman’s body temperature is usually higher, between 36.5 and 37 degrees.

During your menstrual cycle, if your body temperature increases by about 0.4 – 0.8 degrees Celsius compared to normal, your body is in the time of ovulation.

To get accurate results, you should get your temperature as soon as you wake up. However, for some people, the body temperature changes so much that this method is not completely reliable.

Alternatively, you can use online ovulation calculators. Enter your period’s start date, menstrual cycle, and average number of days to see your expected ovulation date.

2. Check cervical mucus

Observing the cervical mucus is also an effective way to calculate the menstrual cycle to predict when you ovulate. Hormone levels will change at the time of ovulation, so the volume, texture and color of mucus will also change.

At the time of ovulation, the amount of fluid will be white and the highest secretion. After the menstrual cycle, cervical mucus is quite small, white or yellow and quite sticky. As ovulation approaches, cervical fluid changes from dry to wet, creamy to eggy, stretchy to sticky..

3.  Use an ovulation test strip

Ovulation test strips help test the levels of luteinizing hormone (LH) in the urine. This is a specialized product that helps women easily predict ovulation.

The best time to use the ovulation predictor test is a few days before your midway point. The test strip works like a pregnancy test and will give accurate results of ovulation from 12 to 36 hours.

Look on the test strip, if there is 1 line, it means that ovulation has passed. If there are 2 dark or light colored lines, it means that ovulation is coming.

In case there are 2 red lines showing but the lower line is darker than the upper line, it means that ovulation will take place in the next 24 – 48 hours.

4. See the menstrual cycle

Basic ovulation formula: take the number of days of a cycle minus 14.

As Émer shared, a typical menstrual cycle will last from 28-35 days, starting from the bleeding day of this month to the bleeding day of the next month.

For example, your bleeding day this month is August 10 and the next bleeding day is September 9 => your menstrual cycle is 28 days.

Applying the formula we have: 28 – 14 = 14

=> Your ovulation day will fall on the 14th day – counting from the first day of your period of the month.

Continuing with the example above, your exact ovulation date will fall on 24/8. To improve your chances of conceiving, you should add/subtract from 1 to 2 more days.Masterizing your menstrual cycle is a way to help you easily determine your fertile days especially if you want to get pregnant.

Masterizing your menstrual cycle is a way to help you easily determine your fertile days especially if you want to get pregnant

Some common effects in the menstrual cycle

During the menstrual cycle, women often experience some common symptoms. Specifically:

● Before menstruation: tingling pain in the lower abdomen, tightness in the chest, back pain…

● During menstruation: acne, migraine, cramps, eating a lot. Grumpy mood, being too sensitive, getting easily sad or angry.

Depending on the physical condition of each person, there are different symptoms. You may have severe stomach/back pain during your period, while other women won’t.

Émer Menstrual Pants: Menstruation feels better!

Émer menstrual underwear is made of super soft fabric, extremely safe for sensitive areas, so it is loved by many women around the world.

The product features a smart 4-layer structure with an absorption layer of 35 – 45cm long and super absorbent capacity equivalent to 5 regular tampons, helping to lock the liquid inside.

In addition, Émer panties use antibacterial fabric technology to effectively deodorize and fight infection. You can use the product up to 10 hours and reuse it for 3-5 years, thus saving you a lot of money.

Émer offers a wide variety of designs and options, along with many colors to choose from, to suit all needs of women. In particular, Émer also proposes a menstrual swimwear with a new technology yet unseen in Vietnam. The product becomes a great “weapon” to help women feel more confident and comfortable when swimming.

Menstrual underwear Émer is a great “partner” to help you free yourself from your period


Hopefully, Émer’s article has helped you gain more knowledge about how to calculate the menstrual cycle as well as choose the right product to make you forget about your period.

For any questions about products, prices and ordering process – please call the hotline 0888.400.922 for more information from Émer!