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Doubt 9 out of 10 new pregnant women, how to calculate the time of pregnancy can be very confusing. The bill that doctors make seems to be a great mystery! But know that it is not so complicated to understand how doctors calculate the time of pregnancy . Just be aware that the pregnancy lasts an average of 280 days, that is, 9 months spread over 40 weeks or from 37 to 42. In fact everything depends on your cycle and when your fertile period was.
Essential Information
A woman with a regulated menstrual cycle would have no major problems with how to calculate the time of pregnancy, but another woman with an irregular cycle or without remembering when she menstruated could have problems performing the calculation . The fact is that the most important factor to calculate the time of pregnancy, is to be based on the last menstruation.
Initially the doctor will take into account the first day of menstrual flow even if the woman has an irregular cycle. He will count from the first day of the menstrual cycle, as he is not sure when the conception happened. That would make the bill a little less doubtful.
Count by Months
In our mothers’ time, pregnancy was counted for months. It is not uncommon to see an older woman confused when it comes to weeks of pregnancy, as this calculation is relatively new. About 18 years ago there was a change in the way of counting the pregnancy, so that I would have the real idea of when the months would be completed.
Did you know that one month of pregnancy can be longer than the other? Yea! The last months of pregnancy are about 5 weeks old . As the month gets longer, the correct thing is to count from the weeks to not let the doctor or mom get lost when it comes to calculating the time of pregnancy.
Counting Calculation
But how to understand the calculation if the pregnancy is counted from the first menstrual day, where we would not even be pregnant? Simple: the doctor takes 38 weeks of this calculation into account. Usually a cycle is about 28, 35 days. It subtracts 14 days or 2 weeks from the total weeks of pregnancy: 40-2 = 38.
These 38 weeks can be considered the real ones of a pregnancy and can extend up to 40 real weeks, that is to say 42 weeks of pregnancy. We can say that a woman who has long cycles, can take a little more days to complete the 280 days of pregnancy and go into labor.
So it is important to remember that the baby can be born up to 42 weeks counting from the first day of menstruation and everything depends on when the conception happened. To better understand, let’s see a simple calculation:
38 weeks is about 266 days pregnant
9 months are equivalent to 270 days of pregnancy
So it sums up 4 days of difference almost nothing in relation to a pregnancy. The ideal is to have a minimum of 266 days of pregnancy , up to 280 days if we consider 42 weeks of gestation. We can say that a woman who menstruated on July 31, has a date of birth after 280 days, that is, March 8.
Doctors have a table that makes this calculation a lot easier. To confuse a little (or not) I found a more accurate and approximate way of how doctors do the calculation: A) Define the first day of your last period B) add 7 days C) subtract 3 months D) add 12 months. For example:
LMP July 31, 2011 + 7 = August 7
August 7 – 3 months = May 7, 2011
May 7, 2011 +12 months = May 12, 2012 Expected date of birth (dpp)
Ways to Calculate Pregnancy Time – wikiHow
In addition to medical calculus, a very efficient way that can make all the difference in how to calculate pregnancy times is ultrasound . It will show through the size of the baby or the gestational bag , the stage that the pregnancy is by the measurements made by the device . This is the most reliable way of knowing how long it is, in fact, the first ultrasound will be taken into account by the doctor until the end of the pregnancy.
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Pregnancy Weeks Video
Closing Weeks of the Month
One of the most common problems among pregnant women is knowing when the week of pregnancy closes. When you really consider moving from one week to another. The change should be counted when the week passes, for example: 4.6 to 5. If that day is on Friday, then you will make the change of weeks every Friday. To help with the months, here is a table that makes it easier to understand the closing of the months:
| 4 + 3 | End of 1st month |
| 8 + 5 | End of 2nd month |
| 13 + 1 | End of 3rd month |
| 17 + 4 | End of 4th month |
| 21 + 6 | End of 5th month |
| 26 + 2 | End of 6th month |
| 30 + 4 | End of 7th month |
| 35 + 0 | End of 8th month |
| 40 + 0 | End of 9th month |
At the end of pregnancy, the initial calculation is essential as the baby’s measurements become different and can make it difficult to calculate the time of pregnancy . This is because if the baby is big there will be a difference for more and the delivery can happen ahead of schedule.
If the baby is small it can confuse the doctor for less and then pass the time of delivery if he does not go into labor. A valid advice is to keep the first ultrasound and always take it in case you need to go to the maternity emergency room, although, the prenatal card has all the data, the insurance died of old age. Still in doubt how to calculate the time of pregnancy? Visit the website calculator!
See also: Pregnancy Weeks – How to Convert to Months?
Foto: Hatty Photo
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Key Information Box:
- Doubt 9 out of 10 new pregnant women, how to calculate the time of pregnancy can be very confusing. The bill that doctors make seems to be a great mystery!
- The fact is that the most important factor to calculate the time of pregnancy, is to be based on the last menstruation.
- In our mothers’ time, pregnancy was counted for months. It is not uncommon to see an older woman confused when it comes to weeks of pregnancy, as this calculation is relatively new.
- These 38 weeks can be considered the real ones of a pregnancy and can extend up to 40 real weeks, that is to say 42 weeks of pregnancy.
- It will show through the size of the baby or the gestational bag, the stage that the pregnancy is by the measurements made by the device .
My name is Dr. Alexis Hart I am 38 years old, I am the mother of 3 beautiful children! Different ages, different phases 16 years, 12 years and 7 years. In love with motherhood since always, I found it difficult to make my dreams come true, and also some more after I was already a mother.
Since I imagined myself as a mother, in my thoughts everything seemed to be much easier and simpler than it really was, I expected to get pregnant as soon as I wished, but it wasn’t that simple. The first pregnancy was smooth, but my daughter’s birth was very troubled. Joana was born in 2002 with a weight of 2930kg and 45cm, from a very peaceful cesarean delivery but she had already been born with congenital pneumonia due to a broken bag not treated with antibiotics even before delivery.
