Cervical Mucus – the most important sign of ovulation

Cervix Mucus is the most important sign of ovulation to determine the fertile days in cycle. I will tell you how to use the mucus to get pregnant naturally.

In this article I want to show you why cervical mucus is the most important signal for ovulation when you are trying to have a child. If you want to get pregnant, this is the most important signal which you can observe, and which will tell you most. Why? That is what I am going to explain in this article.

Where is cervical mucus produced?

Cervical mucus is produced in special glands within the neck of the uterus (crypts). The neck of the uterus is located at the lower end of the uterus and reaches into the vagina.

cervical mucus cryps

Cervical mucus is produced in the crypts of the neck of the uterus and from there finds its way out through the vagina.

It is almost unbelievable that human babies can come out through this cervix – the cervix can open that wide. From the neck of the uterus the freshly produced mucus runs directly out of the cervix of the uterus. Due to the force of gravity the cervical mucus flows down in the direction of the vulva and can then often be seen on the toilet paper or in the underwear.

Cervical mucus has four essential functions that are important for a successful fertilisation:

1. Feeding the sperm

When the sperm gets into the female body after ejaculation, it feeds on the cervical mucus.

2. Moving the sperm

When ovulation took place, cervical mucus helps to move the sperm from the vagina to the uterus. The movement into the fallopian tubes can be explained mainly with hormonal reactions.

3. Filtering out dysplastic sperm

Sperm with lower quality is filtered out through the structure of the cervical mucus, because the “winning” sperm, that finally reaches the egg cell, should have the best quality.

4. Protecting the sperm from the acidic environment of the vagina

Without cervical mucus sperm could only survive up to three hours in the female body. In the cervical mucus sperm can keep their ability to fertilise up to five days.

Remember: If you can see cervical mucus, you can get pregnant!

Why is cervical mucus the most important sign of ovulation?

In the following, I would like to explain to you three main reasons, why cervical mucus is by far the most important ovulation signal.

1. Cervical mucus shows that you are fertile way before the ovulation

Unlike the basal body temperature, which only significantly increases after the ovulation, the cervical mucus clearly changes before the ovulation. This change is different for each woman and also differs from cycle to cycle. Nevertheless, we can say that the quality of the cervical mucus in most cycles increases until the ovulation and decreases again afterwards. According to what you have seen or felt, the quality is classified into categories and marked with symbols (e.g. ø,f,t,S,S+), so you can keep record of it in a chart and analyse it. Usually the water content increases dramatically during the time of ovulation, which is why the cervical mucus mostly becomes more transparent and spinnable, which you can see in this picture:

cervical mucus ovulation

Increasing the quality of cervical mucus to ovulation

Cervical mucus shows you directly what your oestrogenic level looks like, and this changes significantly for every woman before ovulation. That is why in my opinion cervical mucus is one of the most important signs of ovulation!

2. It is easy to monitor cervical mucus

It is very easy to monitor your cervical mucus. All you need are your fingers, maybe some toilet paper and yourself. You can monitor your cervical mucus while going to the toilet. According to the looks and consistency you can decide on a symbol (…t,f,S,S+). There is a special chart to help you determine the symbols, which you can also find in my book. Afterwards, you can enter your observations in a suitable app or a cycle chart – done!

3. Cervical mucus is free

Cervical mucus usually indicates your fertile days very clearly. Of course, it is even better if you take your temperature and analyse it in combination with the mucus. Because in the end you can’t determine only with your mucus if an ovulation has really taken place in this cycle. This is only possible using the temperature. Nevertheless, we can say that no other fertility signal changes so significantly before the ovulation, which is why it is always worthwhile to have sex when you can see cervical mucus. To monitor your cervical mucus you don’t have to buy any tests or computers. Your cervical mucus is free of charge and if you know what you are doing it works at least as good as ovulation tests or similar methods.


Cervical mucus is the most important sign of ovulation, because with every woman it changes significantly before the ovulation. Unlike mittelschmerz (medical term for ovulation pain), which only very few women experience, cervical mucus can be monitored and easily used as a fertility signal by 99% of women. It is very easy to monitor the cervical mucus and keep records of the results in an app or a cycle chart. On days when you can see mucus, it is worthwhile to have sex if you want to get pregnant. Thanks to the cervical mucus sperm can survive in the female body for three to five days waiting for a potential ovulation. Furthermore, the mucus helps to move the sperm to the egg cell and filters out dysplastic sperm. Although it is great that cervical mucus is available to every woman for free and it works a lot better than an ovulation test, I still have to say that it is worthwhile to monitor the mucus in combination with temperature measurement. Only when you take your temperature, monitor your cervical mucus and analyse the results in combination, you can know for sure if the ovulation took place. Only using the temperature, you can know without pregnancy test if you got pregnant. Only with the temperature in combination with the mucus you can make a diagnosis of your cycle and narrow down causes why you didn’t get pregnant. I have summed up everything you need to start immediately in my GET PREGNANT Starter Set, which explains to you how all of this works and what you need to start. All the best to you on your way to your planned child!



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