What is the Billings ovulation method?

As you probably know, you can only become pregnant if you ovulate: the moment an egg is released from one of your ovaries. You can find out what your fertile days are by doing an ovulation test, but there is also the Billings ovulation method (BOM). The Australian doctor John Billings developed a method to know when ovulation takes place. At the BOM you study the composition of your cervical mucus, or your vaginal discharge. This mucus changes shape and color during your cycle, depending on how fertile you are.

Billings ovulation method: phase 1

The days that you have your period and the first few days after that, your discharge is thick, cloudy, acid and tough. Due to the thickness of the mucus, sperm is difficult to penetrate. And if she succeeds, they probably won’t survive the acidity. According to the BOM, this is called your ‘clomid otc‘. Your labia can also feel a bit dry during this period.

Billings ovulation method: phase 2

The ovulation is coming, which causes a change in your secretion: it becomes brighter, more elastic and more fluid. It looks a bit like the protein of a raw egg. If you take it between your thumb and forefinger, you can pull threads from it. This mucus is a lot friendlier for sperm cells, they can penetrate through it and swim to the cervix.

The peak

The peak is the moment around ovulation. The cervical mucus is transparent and very slippery, the entrance to your vagina is swollen. The mature egg that is released remains alive for 12 to 24 hours to be fertilized. The day after the peak, the mucus becomes flaky or sticky, or disappears completely.

A few days before the peak (in phase 2) to 2 or 3 days after that is your fertile period. During this period you have the best chance of getting pregnant.

Another indication: abdominal pain

Many women experience abdominal pain just before their ovulation, very specifically in a visible place at the bottom left or right of the abdomen. This is called ovulation pain and is caused by the tension in the ovary just before an egg ‘jumps’. This abdominal pain is also a good indicator for your fertile period.

Billings ovulation method: phase 3

An infertile period starts 3 to 4 days after the peak, until your next menstrual period. If you have a discharge, this is usually opaque, dry and grainy. This period lasts approximately 2 weeks.

Get to know your body

The Billings ovulation method is a handy method to choose the right moment for an attempt to get pregnant. Try to get to know your own body as well as possible. For example, you can keep a diary when you think you are in your fertile phase. Have you recently stopped taking the pill or other hormonal contraceptives ? Then it may take a while before you have a normal fertility cycle again, with the associated changes in your cervical mucus. With the calculation tool below you can also calculate your fertile days.

An you feel the conception?

You cannot feel the fertilization itself, but according to some women you can feel implantation. They describe a feeling of cramp in their womb the moment the egg is implanted. Whether this is correct is not scientifically proven. Are you pregnant? Then calculate your calculated date and follow your pregnancy from week to week.

Prior to implantation

Just start at the beginning. The first days of your menstrual cycle an egg has matured in one of your ovaries. During ovulation (ovulation) , this egg is released and moves through your Fallopian tube to the uterus. The days around your ovulation are the most fertile days. During this period the egg can be fertilized : a sperm cell penetrates the egg and together they form one new cell. The start of a pregnancy! The fertilized egg continues its way to the womb and starts to develop into an embryo. It takes about a week for the egg to reach the womb. In the meantime, the womb has prepared for a possible pregnancy. That happens every month: the lining of the womb becomes thicker. It is getting ready for a possible implantation of a fertilized egg. During a menstrual cycle in which no egg is fertilized, the womb lining dies about two weeks after ovulation and then you have your period. If fertilization has taken place, the fertilized egg will arrive in the womb before that time, where it will implant itself in the womb wall. If that implantation goes well, you are really pregnant.

When does the implantation take place?

The implantation of a fertilized egg can take place between five and twelve days after ovulation; it often happens around the ninth day after ovulation. That is on average about five days before your period. You can (approximately) calculate the moment of implantation yourself:

nine days after your ovulation

five days before your expected period

Please note : these are averages.

What exactly happens during implantation?

During implantation, the word says it all, the fertilized egg nestles in the womb lining on the inside of the womb wall. That uterine lining (endometrium) consists of two layers the basal layer, which is always present and the functional layer, which grows every month and is repelled during menstruation. The egg digs itself into that functional layer of the womb lining, which includes mucous glands and blood vessels. It is an optimal environment for feeding an embryo and allowing it to develop. The fertilized egg sinks completely into the womb lining and settles into it. The egg has bulges on the outside, called adhesive flakes, that grow inside the mucous. The egg takes up nutrients through these flakes, which are supplied through the blood vessels in the womb lining. If the implantation has gone completely well, During the implantation process, the fertilized egg begins to secrete the hCG pregnancy hormone . This hormone warns your body that a pregnancy has started. This is also the hormone that is detected by a pregnancy test: it measures the hCG values in your urine. A pregnancy test can therefore only be positive from the moment the implantation is complete, although the amount of hCG is often still too low to measure. On average, the egg has completely sunk into the womb lining about nine days after conception. The implantation is then completed. In fact, that is only when the pregnancy actually begins. But if you are going to calculate the calculated date, calculations will be made from the first day of your last menstrual period. The moment the implantation is successful, you are therefore already three weeks pregnant according to the official count.

Can you feel the implantation?

Yes, some women feel the implantation of the egg. But most women don’t notice it. The implantation may be accompanied by some light cramps in your lower abdomen. This is because the egg ‘bores’ into the womb lining. It feels a bit like menstrual cramps, so it is sometimes difficult to say whether it is implantation pain or whether menstruation is coming. You usually feel implant cramps about five days before your period, and this can take one to two days, until the egg is completely established.

Other directions

In addition to any cramps, there are more signs that may indicate that the implantation is in progress or has just been completed:

Occasional bleeding : if the egg enters the womb lining, a blood vessel can be hit. That way you can lose some blood, the implantation bleed . This occurs in one in five women. You lose a little bit of bright red, light pink or light brown blood. It looks like starting menstruation, but then at an illogical moment, about four to five days early. An implantation bleed can last one to two days. You do not have to worry about it, it is not a sign that something goes wrong during implantation.

Your body temperature drops slightly : this is actually only measurable if you keep track of your body temperature for a long time, for example because you want to predict your ovulation that way . During your ovulation your body temperature rises 0.3 to 0.5 degrees. During implantation your temperature can make a small dip, but that difference is often so small that most women do not notice it.

First signs of pregnancy : from the moment the egg inserts itself, the secretion of the hCG pregnancy hormone begins. That hormone can cause all sorts of initial pregnancy symptoms , such as nausea, sensitive breasts and mood swings. As soon as the implantation is complete, you can already see this first sign.

Everything about the womb

At the end of your pregnancy, your womb is five hundred times larger and ten times as heavy as before. But a lot of things also happen to this organ if you are not or no longer pregnant. Everything you want to know about the womb: before, during and after pregnancy.

The womb

The uterus or womb looks like an upside-down pear in shape and size. This organ is located in the pelvic cavity, behind the urinary bladder and in front of the rectum. Tires keep the uterus neatly in place. As your uterus grows heavier and larger during pregnancy, these bands may come under pressure and stretch. This can cause tire pain .

The uterus is made up of two parts: the body and the cervix. The fallopian tubes connect the uterus body with the ovaries. When a mature egg leaves the ovary and becomes fertilized, it nestles in the body of the womb. The other part of the womb is called the cervix. This is connected to the vagina via the cervix.

The uterine wall

The wall of the womb is made up of four different layers. The outer layer consists of smooth muscle tissue. During labor this muscle pulls together such a contraction is called a contraction . The second layer contains many muscles and blood vessels and the third layer consists of annular muscle tissue. The fourth layer is the womb lining , which consists of the basal and functional layer. The basal layer is always present, the functional layer is repelled every month ( menstruation ) and continues to grow during each cycle. A fertilized egg nestles in the functional layer.

The menstrual cycle

During ovulation or ovulation, the egg leaves the ovary and goes to the Fallopian tube. Once ovulation has taken place, the egg in the ovary waits for fertilization. Meanwhile, the hormone progesterone ensures that the womb lining becomes thick enough so that the egg can nestle in it. If an egg is fertilized during the ovulation phase and it nestles in the right place, you are pregnant. If this does not happen, the egg will die and be cleared away by your body. The lining of the uterine wall is in that case about fourteen days later secreted by your body along with some blood; menstruation.

Funds height: measure uterine growth

During your pregnancy, the obstetrician or gynecologist checks the growth of your uterus at every visit. He or she does this by feeling the position of the upper edge in relation to the pubic bone and the navel. We also call this the funds height. By determining the funds height, your midwife knows how many weeks you are pregnant and whether your baby is growing well. The funds height is equal to the number of weeks of pregnancy, with a margin of one to four centimeters. A woman who is twenty weeks pregnant has a fundus height between sixteen and twenty-four centimeters. An empty bladder is important for this measurement, otherwise the fundus height may deviate a few centimeters.

The placenta

Your baby will grow for nine months thanks to the placenta, also known as mother’s cake. This placenta consists of two parts: a maternal part and a childlike part. The maternal part has developed on the womb lining where the embryo has settled. The childish part has developed from a part of the embryo. There is a membrane between the two. This keeps the bloodstreams of mother and baby separate. On the one hand, the placenta is attached to the womb wall, a little depending on where the implantation took place, and on the other hand, it is connected to your baby via the umbilical cord .

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