Welcome to Healthcare Magic forum.
Please do not panic.
The developing fetus is seen inside the gestational sac
formed by the uterus in the form of a fetal pole
or embryo covered with yolk sac.
However sometimes if ultrasound is done in early gestation first month it can be too early to visualise a fetal pole.
The fetal pole becomes visible in a transvaginal ultrasound
somewhere between 5 to 6 weeks of gestational age
, but any small error in dating the pregnancy
can cause non visualisation of fetus.
The yolk sac is the first thing to become visible inside the gestational sac on a transvaginal ultrasound, appearing at an average of 5.5 to 6 weeks' gestational age.When an ultrasound shows no yolk sac, the reason may be miscarriage
but it could also be that the pregnancy is still early.
In a viable pregnancy, the yolk sac and possibly the fetal pole will always become visible on a followup ultrasound which may be ordered by your doctor in another weekto ten days.
When a followup ultrasound does not show continued development and the appearance of a yolk sac, your doctor will diagnose miscarriage or a blighted ovum
So in your case when you are faced with an ultrasound that shows no yolk sac, you will probably be told to wait for a followup ultrasound. The wait can be very difficult, naturally, but is necessary for an accurate diagnosis.
Wishing you all the best .