Ultrasound is usually appropriate at 6 weeks of pregnancy.
For women with regular menstrual cycles, ultrasound can usually be done at the hospital at 6 weeks of pregnancy to check for the presence of the gestational sac, yolk sac, embryonic buds, and heart tube pulsation at this time. Through ultrasound, it is possible to determine whether the embryo is viable or not, and it is also possible to rule out ectopic pregnancy.
Before the 6th week of pregnancy, it is usually not possible to distinguish between the head and the tail of the embryo, so it is not possible to measure the maximum diameter of the embryo, and if the examination is done too early, it is very likely that the embryo will not be clearly observed.
However, the specific situation varies from person to person. Some women have irregular menstrual cycles and the embryo may settle later, so if the examination is done at 6 weeks of pregnancy, and if the embryo cannot be determined, the ultrasound examination can be done after another 1-2 weeks.
In addition, women should follow the doctor’s instructions and go to the hospital for regular pregnancy checkups throughout the pregnancy to observe the growth and development of the fetus.