Thanks for the query.
Visualisation of a yolk sac
is useful in distinguishing an intrauterine pregnancy
(IUP) from a blighted ovum
, as it is only seen in IUP.
If the MSD is 16 mm or greater and no fetal pole
/ yolk sac on trans-vaginal scanning then this suggests a non-viable pregnancy . Repeat scanning with an larger MSD and serial quantitative beta-HCG
In a normal early pregnancy, the diameter of the yolk sac should usually be
Visualisation multiple yolk sacs is the earliest sign of a polyamniotic pregnancy, e.g twins.
I recommend you to get a doppler done to visualize heart beat.
Hope this helps,