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FEMIBION has developed supplements for the special phases of pregnancy, from before conceiving to the end of breastfeeding. FEMIBION food supplements provide well chosen nutrients that, used as a complement to a balanced and varied diet, can support the mom and the baby during this special and exciting time.

When am I at my most fertile?

So you and your partner have decided you want to start a family. Once the decision is made and the excitement outweighs the insecurity of this life change, it’s time to talk about fertility.

You probably know that in each cycle, a healthy, normally fertile couple has a 15-25 % chance of conceiving a baby (provided you have sex during the fertile days of course). If you don’t want to leave it down to luck and statistics, you can increase your chances of getting pregnant by making the most of your ‘fertile window’. Follow a few of our tips below, and don’t forget to use our fertility calendar as well. 

Understand the basics, and then it’s up to you to ‘study’ yourself.
In each cycle one of your ovaries releases a mature egg which then travels down the fallopian tube where it can get fertilized if it meets with a sperm cell.
The egg is viable for only about
But sperm cells stay alive for longer - up to
If you and your partner had sex shortly before your ovulation, the sperm can still do its job.
This gives you a fertility window of about
You want to know when you will be ovulating, because once the egg is released there is not much time left.
If your menstrual cycle takes the standard 28 days, your ovulation is estimated to happen on day number 14.
Your ‘ovulation forecast’ depends on your average cycle length.
You start counting on the first day of your period, so the first day of your period is day 1 of your cycle.
Take notes when you have your period, either in your calendar or with one of the many tracking apps available.
Once you know your average cycle length, you can calculate the estimated ovulation date by using online tools like our fertility calendar.
It is called an ‘average’ cycle length, so a certain degree of variation is absolutely normal. However if you are concerned, you should consult your doctor.
There are several signs that indicate
ovulation is happening soon:

To predict your ovulation based on your temperature, you have to measure it every day at the same time and the same place of your body.

Shortly after ovulation your basal body temperature rises about half a degree Celsius.

Your most fertile time is about 2 to 3 days before you reach the highest temperature.

Measuring your temperature in the current month can help you to predict the time of your ovulation in the next month, and so on.


Cervical mucus changes its consistence in the course of your cycle.

Around the time of your ovulation it becomes more watery to allow the sperm to swim easily.

In the time when you are not fertile, it is more sticky and dense.


Your hormones change a lot throughout your menstrual cycle.

Once the level is high enough to give a positive result on the test, you will probably ovulate within 24 to 36 hours.

In order to be more certain, you can buy ovulation tests (or even ovulation “computers”) which measure the level of luteinizing hormone in your urine.