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What does BF mean?

BF is an abbreviation of the estimated date of birth, the date your baby is expected to arrive.

Calculate the BF - how to do it!

When someone asks which week you are in, the answer can be two different ones, because it is depends on how you count. Are you in week 18 when you are in week 17+2, or when you are in week 18+2? As an expectant parent, how you calculate which week you are in differs. Moreover, often from how health professionals count. So let's clarify all question marks on how to calculate BF and why to count weeks of pregnancy!

What week am I in? Don't you count the month of pregnancy?

Midwives and other health care professionals always count the full week as you have been able to cope. That is, if you are in week 26+2, health professionals say that you are in week 26. Expectant parents often count the week you are 'in', the that is, if you are in week 26+2, you are said to be in week 27.

The pregnancy is considered full term when 37 full weeks have passed, i.e. week 37+0 (when you "enter" week 38). If a baby is born before week 37+0, the following are counted the baby is considered premature. If the pregnancy goes to week 42+0, the baby is considered to be overburdened.

Most pregnancy platforms, including Baby Journey, calculate based on the number of children. week you are currently in. If you are in week 24+2, then you are in week 25 at us!

How do you actually calculate BF (estimated date of delivery)?

The first step in figuring out how far along the pregnancy is, is to figure out the last menstrual period first day. Then you count a month on 28 days (four weeks), which is also the average length of a menstrual cycle. This tells you how far along the pregnancy is.

This means that the first day of your last period is also the first day of your pregnancy. day, although you actually haven't had time to get pregnant yet because fertilization takes place at ovulation, around week 2+0.

Based on the week you are in, you will also receive a preliminary estimated date of delivery. This is referred to as the BF, but the correct date of estimated
You will often have an ultrasound scan later in your pregnancy. This takes place either around week 13 when KUB is usually done as well, and/or around week 19 when RUL (routine ultrasound) is usually performed. The midwife measures the fetus's growth to then calculate how many weeks you have been pregnant. This can thus moving your BF forward or backward a few days. But it can also be the same estimated date you received initially.

If you have a particularly short or long menstrual cycle, this date can be is moved forward or backward by many days.

Baby Journey can calculate your BF automatically based on your last menstrual period. on the first day, so when you have a plus on a stick, we can be the first to give you an approximate date to work from, giving you the answer to when your baby is due is finally coming.

What is month of pregnancy vs calendar month in a pregnancy? 

Sometimes midwives may talk about the calendar month and month of pregnancy (as if the it wasn't complicated enough anyway!). A calendar month counts as 30 days and estimated from the date on which you actually became pregnanti.e. the day when you had
ovulation. According to the calculation method, you are then in week 2+0.

A month of pregnancy, also known as a lunar month, is counted from the most recent the first day of menstruation and lasts for 28 days. This is the time when
a pregnancy test does not yet show that you are pregnant. This is usually given to you find out around week 5+0. 

This means that the pregnancy (40 weeks) actually lasts for 10 months from the first day of menstruation. The length of 9 months that is usually talked about is is therefore based from about week 4-5 when you can see or know that you are is pregnant, and until BF.

Calculate BF with our pregnancy calendar: what week are you in?

To work out how far along your pregnancy is, you need to know the first day of your last period. Baby Journey's pregnancy calendar can calculate BF automatically based on this, so once you've added a dot, we can be the first to give you an approximate date to work from and give you the answer to when your baby will finally arrive. If you want a little more understanding about how to calculate BF in practice, you can count months (counted as 28 days) or weeks of pregnancy (7 days) from the first day of your last period onwards - then you can figure out how far along you are. You will probably realize that 28 days times 9 (the number of months you are pregnant) is not equal to 280 days that a pregnancy is always counted as. This is because the 9 months that people usually talk about pregnancy being, starts counting from week 4, which is about the time you can figure out that you are pregnant. This means that you will actually be pregnant for 10 months if you count from the first day of your period! Calculating your due date will give you an idea of when the baby will arrive, but very few babies are born at the estimated time of delivery. The date actually gives an indication of approximately when you can expect the baby to be ready to face the world. The date on which you expect to give birth can also be changed a few days earlier or later when you have an ultrasound scan, as this allows the medical staff to measure the fetus and thus determine the week of pregnancy. Your due date may also be moved depending on whether you have an extra long or short menstrual cycle.

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