When a woman finds out about her pregnancy, one of the first questions that she has, is a question related to the date, when her childbirth will take place. Usually, an average pregnancy lasts for 40 weeks. From the moment of the conception, average pregnancy usually lasts for about 38 weeks. The most common way to calculate your due date is to count 40 weeks from the first day of the last menstrual period. There are other ways to find out the date. One of them is the countdown of three months from the first day of your last period and the addition of seven days to this date. Usually the doctor determines the date in this way. You should know that it is difficult to determine the exact due date and the date that the doctor has set for you can vary in 1-2 weeks. If your cycle is irregular, then calculating your date in this way can be problematic.
Calculating the date of the delivery can be much easier if you know the exact date of the conception. It will greatly simplify the situation for you and your doctor if you know the exact date of the conception, because you just need to add 266 days to this date and you will get the date of you child’s birth.
Nowadays a huge number of women around the world are choosing an IVF procedure to get pregnant. For such women, the determination of the due date is not a problem, since the period is calculated using the date when the IVF was done.
If you are unable to determine the date of the last menstrual cycle and do not remember the date of the conception, or if you are not sure about these dates, then the exact duration of the pregnancy and the expected date of birth can be determined by the ultrasound procedure, which is required for all pregnant women. It helps to monitor the development of the fetus at different stages of your pregnancy and helps to establish at what stage of the development the baby is. Usually, a pregnant woman undergoes an ultrasound procedure in each trimester of the pregnancy.
It should be noted that not all pregnant women have an early ultrasound procedure. This may depend on different life situations. Some women get an ultrasound scan as soon as they find out about their pregnancy, but there are cases when women do not have an ultrasound scan in the first trimester.
A sign that your date is right may be the first time, when the child’s heartbeat is heard. This usually occurs between 9–10 weeks of the pregnancy. The fetal movement can usually be felt at the period of 18-22 weeks.
The factor, which helps to determine your due date, may be the size of your uterus. When you visit your geneticist for the first time, after you know that you are pregnant, the doctor will determine the size of your uterus and find out at what stage of the pregnancy you are.
Many pregnant women are concerned about the question whether the due date set by the doctor can change. In fact, this date may change and this should not be a cause for any concern, since your due date may change because of a number of reasons set by your doctor and an ultrasound scan. Pregnancy may progress and the fetus may develop more quickly than usual. It is possible that you did not accurately remember the dates of your periods. It is possible that your first ultrasound was in the second trimester and the date was not determined accurately. If you are worried about this and you have any questions that worry you, then you should talk to the doctor, who is watching your pregnancy, and ask him all the questions.