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What Is The Cause Of An Absent Yolk Sac?
hi doc, i had a trans vaginal ultrasound yesterday and it shows a gestational sac of 9mm, no yolk sac yet. I have an irregular cycle and my last menstrual period was on 17th oct... but i assumed i ovulated on day 22 as i recognized the signs of ovulation on that day like clear stretchy vaginal discharge & cramps.
Wed, 16 Apr 2014
Hi and welcome to HCM.
In early pregnancy, the yolk sac functions as a source of nourishment for the developing baby before ultimately being absorbed by the baby as a part of the gut.
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.
Because the yolk sac first becomes visible around 5.5 weeks of gestation, seeing no yolk sac on an ultrasound could simply mean that the pregnancy is not yet 5.5 weeks along and errors in remembering the last menstrual period or irregular cycles can affect calculations of how far along a pregnancy is at the time of an ultrasound.
Dont get tensed, you may be in very early stage of pregnancy
Regards
Dr Santosh
In early pregnancy, the yolk sac functions as a source of nourishment for the developing baby before ultimately being absorbed by the baby as a part of the gut.
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.
Because the yolk sac first becomes visible around 5.5 weeks of gestation, seeing no yolk sac on an ultrasound could simply mean that the pregnancy is not yet 5.5 weeks along and errors in remembering the last menstrual period or irregular cycles can affect calculations of how far along a pregnancy is at the time of an ultrasound.
Dont get tensed, you may be in very early stage of pregnancy
Regards
Dr Santosh
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