Patient's question:
I have an itchy lower body, and my underwear is always yellow. What's going on? How many weeks pregnant should one be to see a gestational sac?Doctor's answer:
The gestational sac is only visible in the early stages of pregnancy. For women with regular menstrual cycles of 28 to 30 days, if they miss their period for 35 days, an ultrasound can detect the gestational sac in the uterine cavity. Around the 8th week of pregnancy, the fetus grows to approximately 1.66 cm, and the fetal shape is well-defined, with the head, body, and limbs distinguishable. The head is larger than the trunk. The ultrasound shows the gestational sac occupying about half of the uterine cavity, with the fetal morphology and movements clearly visible, as well as the yolk sac.