A gestational sac of 0.6 x 0.4 centimeters is among the earliest manifestations of gestational sacs in the uterine cavity, most of which are around 5 weeks of gestation.
The week of pregnancy is calculated on the basis of the last menstrual period, and conception is calculated on the basis of the day of ovulation. Most of the early gestational sacs are around 0.5 centimeters, which can be shown by ultrasound, and the corresponding examination stage is basically at 5 weeks of pregnancy, for about 35 days of pregnancy. The specific development of each embryo will be different, not completely accurate value, just a clinical estimate.
In addition to the gestational sac, the specific pregnancy period should be determined by combining the specific menstrual cycle and the first day of menstruation, as well as the status of coitus. Hormone levels, such as progesterone and human chorionic gonadotropin HCG, are also taken to determine the development of the embryo.
In addition, during pregnancy, you should go to the hospital for regular checkups and seek timely medical attention if you find any abnormalities.