How to calculate gestational age can be done in various ways. You can do calculations using the first day of the last day of menstruation or HPHT, pregnancy calendar, ultrasound examination or by using the heart rate and fetal movements.
By calculating the gestational age, it can assist in providing health measures for the mother and fetus during pregnancy. Gestational age can also help the obstetrician or midwife determine the day of birth. Calculate the common gestational age in weeks or months.
The following is calculating the gestational age in months that can be done by pregnant women.
How to Calculate Gestational Age Using HPHT
Calculating gestational age using the first day of the last day of menstruation or better known as HPPT can be easily calculated for women who have regular menstrual cycles. This method is considered easier to do because it only includes the date of menstruation into the formula.
First Day of Menstruation Last Day of Menstruation (HPHT) can also determine gestational age and date of birth. To help you determine your gestational age using HPPT, you can enter into the formula below:
Determining the Age of Gestation
If you last had your period on June 20, 2015, for example today is July 30, 2015, then your pregnancy is 1 month more than 10 days or 5 weeks over 3 days.
Determining the Date of Birth
Meanwhile, to determine the date of birth, the following formulas can be used:
Birthday = (Date + 7), (Month-3), (Year + 1)
With the above case example, it can be calculated as follows. (20 + 7), (6-3), (2015 + 1). With the prediction results of the 27th, 3rd month, 2016. To calculate the date of birth, there are two formulas, namely if the HPHT is January-March then use the formulas (Date + 7 days), (month + 9), (year + 0). Meanwhile, for those of you who enter HPHT in April-December, the formula is (Date + 7 days), (month – 3), (Year + 1).
This formula is very easy to apply to women with a regular cycle of 28-30 days. With the estimated date of delivery that is dashed, the date of birth is treated 7 days before and after the results of the formula above. If the result of the formula above is the 27th, 3rd month, 2016, the birthday is predicted to be 20-March-2016 to 2-April-2016.
For easier use, you can use: gestational age calculator
How To Calculate Pregnancy In Months Through Fetal Movement
For those of you who want to determine the gestational age by calculating the fetal movement, you can do it yourself when you feel the first movement of the fetus. Even so, pregnant women in the first pregnancy with second pregnant women and so on have differences in fetal movements that are felt in pregnant women.
In the initial movement when detecting the baby’s movement or what is known as the quickening stage, the baby has started to feel its activities occurring from the 4th to the 6th month of pregnancy. Initially, pregnant women feel like eyelashes tickling your stomach. It’s just that in pregnant women this method is very vague and even mistaken for digestive disorders in pregnant women.
The study, which was written in the article parentsindonesia.com, found that there were complaints that tickled in the bladder and pregnant women experienced abdominal pain such as excess gas. This is because the bladder is attached to the uterus, causing pain due to fetal movement.
The first move a baby makes at 4 months of age is a somersault, although many think it is a kick from a fetus. In an ultrasound examination, it will see the fetus’s body turning around, flexing itself, moving its arms and also doing activities such as thumb sucking.
Entering the fifth month of gestation, the fetus will grow bigger and stronger. Pregnant women will get a jolt in the middle of the stomach. This is because the fetus already has a larger size and weight so that the movement is very pronounced. This fetal movement will be more pronounced when you are resting.
Meanwhile, entering the 7th month of pregnancy, the movement of the fetus is increasingly felt due to the increasing size and weight of the fetus. The movements will be felt until the 9th month of pregnancy. For pregnant women this gestational age is very tiring because of pain in the body, especially in the ribs that are pressed. fetal leg.
How to Calculate Pregnancy in Months Through Heart Sounds
Heart rate can be detected at the age of pregnancy entering the 2nd month of pregnancy. In this month the heart rate is 90-110 beats per minute. Meanwhile, gestational age entering the 3rd month of pregnancy and above will range from 140 beats per minute. In fact, it will experience a more functional development. after reaching the 4th month of gestation.
If at the age of pregnancy entering the 2nd month of pregnancy does not experience a slowed heart rate or is known as bradycardia, it will be associated with a high risk of experiencing a miscarriage. To prevent this condition the mother must consume enough foods that are high and easy to digest and calm the mind so that the flow blood into the uterus can run normally and smoothly.
How to Calculate Gestational Age in Months through Fundus Uterine Height
In early pregnancy the uterine ismus is long and also softer, which is indicated by obstetrics as a presence of hegar. Calculating the height of the uterine fundus using a tape that determines gestational age and weight of the fetus in the womb. Even with the help of measuring the height of the uterine fundus can provide progressive information on the fetus and detect problems related to fundal height that is too large and too small in the estimated gestational age.
At the age of gestation between the 5th month and 6th month of the fundus height can reach 24-25 cm above the symphysis. Whereas at the 7th month of pregnancy, the height can reach 26.7 cm above the symphysis. At the 8th month of pregnancy, height above 29.5 can even reach 30 cm above the symphysis. Finally, at the age of 9 months of pregnancy, it reaches 33 cm above the symphysis.
How to Calculate Gestational Age in Months Using Ultrasound
Calculating the gestational age using ultrasound can be done when you get signs of pregnancy. An ultrasound examination can be done for the first time when you are more than one month late.
Even though the picture at 4 weeks of gestation is very small and you have to use a sound wave receiver attached to the body of the pregnant woman on the genitals. Meanwhile, at 2 months of pregnancy, the fetus can be seen measured by heart rate. Even can see the fetus in its entirety. and includes the head, hands and feet.
Thus, for those of you who want to know the gestational age in months, you can go through the HPHT, use fetal movements, through the height of the uterine fundus and also through ultrasound performed by a certified obstetrician or midwife.