How to calculate the number of days of pregnancy

With the development of the times, our life patterns are becoming more and more chaotic, and staying up late has become a common phenomenon for everyone. Staying up late often can easily cause endocrine imbalance, so in many cases girls do not think it is normal to miss their period, they just think it is late. In the end, I found out that I was pregnant. How do I know if I am pregnant?

We must understand that pregnancy begins when the sperm and egg combine successfully and the embryo implants. Because if the sperm and egg combination does not successfully implant the embryo, then even if the sperm and egg cell combine, it does not necessarily mean pregnancy. And it takes about 7 days for the sperm and egg to combine successfully and the embryo to implant. When the sperm and egg combine successfully and the embryo implants, we begin to calculate the growth and development status of the test tube embryo. Generally, we measure the development of IVF embryos in weeks, or in days, but never in months. Since the months vary in length, some have a 31st and some do not, February can only have 29 days at most, while an average year can only have 28 days.

In other words, during pregnancy, the number of weeks of pregnancy of the test tube embryo is measured and then converted into days. We all know that there are 7 days in a week and four weeks in a month. In other words, a pregnancy month can only have 28 days. A detailed pregnancy process is 280 days, which is 10 months. The ten months of pregnancy here is a little different from what we usually say. When doctors in hospitals do pregnancy checkups for pregnant women, they also say how many weeks the pregnancy is, in other words, how many days the pregnancy is, and very few people will say how many months the pregnancy is.

Generally speaking, it is only in the early stages of pregnancy, that is, in the early stages of pregnancy, that we need to know how many days the pregnancy is. Because in the early stages of pregnancy, the growth and development status of the test tube embryo is accurate to a certain number of days. The test tube embryo will produce a gestational sac 30 to 40 days after pregnancy; the test tube embryo will produce a fetal bud and fetal heartbeat 40 to 50 days after pregnancy; the test tube embryo will produce a fetal heartbeat 50 to 60 days after pregnancy. Only when the embryo develops to the point where the fetal heartbeat occurs can we say how many weeks the test tube embryo is gestating. Before the fetal heartbeat occurs, the standard is based on the number of days of pregnancy.

When we go to the hospital for an ultrasound examination, the number of weeks of pregnancy is used as the unit. For example, if the test tube embryo is 50 days pregnant, the B-ultrasound examination report will write 7 weeks of pregnancy plus 1, and the B-ultrasound examination report will not write how many days of pregnancy it is. In the second half of pregnancy, the B-ultrasound examination report will always write the number of weeks of pregnancy. Even if it is more than a few days later, a plus sign will be added after the number of weeks of pregnancy. It will not be accurate to the exact number of days. It can only be accurate to the exact number of days in the early stages of pregnancy.