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Early pregnancy ultrasound findings and pictures at 5 to 6 weeks
IVF pregnancy ultrasound at 5 weeks 2 days
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| Five week pregnancy ultrasound with sac and yolk sac Transvaginal ultrasound, normal pregnancy at 5 weeks 2 days Gestational sac (black area ) and yolk sac are seen Sac measures 6.25mm diameter Yolk sac (small white circle in left side of the sac) Yolk sac is a source of nutrients for the fetus The fetus is too small to be seen this early in pregnancy |
Identical twin pregnancy ultrasound
Ultrasound of another pregnancy at same gestational age as above
This shows identical (monozygotic) twins
- 1 gestational sac with 2 yolk sacs visible inside it
This results from an early embryo dividing into 2 genetically identical embryos
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The vast majority of twins from assisted reproductive technology procedures are not "identical", but result from implantation of 2 embryos that were the result of fertilization of 2 different eggs, as shown in the ultrasound below.
Ultrasound of a twin pregnancy
Fraternal twins result from implantation
of 2 genetically different embryos
Yolk sacs and fetal poles (the early fetus) are seen in 2 completely separate sacs
This pregnancy is at 6 weeks
Transvaginal ultrasound of a normal pregnancy at 6.5 weeks of gestation
Transvaginal ultrasound of a normal pregnancy at 8.5 weeks of gestation
Transvaginal ultrasound of a normal pregnancy at 12 weeks of gestation
