A gestational sac of 15mm x 8mm is 5 to 6 weeks of pregnancy.
The week of labor is calculated on the first day of the last menstrual period. If you are 5-6 weeks pregnant, you can count from the first day of your last menstrual period to the 35th to 42nd day of your last menstrual period, which is equivalent to 1 to 2 weeks after your period, and you can see a gestational sac of about 15mm x 8mm on ultrasound.
Some women have irregular menstruation, so the actual gestational week will be deviated according to the time of the last menstruation, and the size of the gestational sac under the ultrasound will be used to correct the gestational week.
At this point in the early stages of pregnancy, folic acid supplementation is needed to prevent fetal neural tube malformation, and regular retesting of blood HCG and ultrasound to monitor the development of the embryo in the body. If vaginal bleeding, abdominal pain and other special conditions occur, you should consult a doctor in time.