Advanced Fertility Center of Chicago ivf

Early pregnancy ultrasound findings and pictures at 5 to 6 weeks

IVF pregnancy ultrasound at 5 weeks 2 days

Normal pregnancy ultrasound at 5 weeks gestation

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


Ultrasound picture of identical twins at 5 weeks 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


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.

Fraternal twin pregnancy ultrasound at 6 weeks
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

4920 N. Central Ave
Suite 2C

Chicago, IL 60630

Phone: (773) 794-1818
Fax: (773) 794-1819

30 Tower Court
Suite F
Gurnee, IL 60031

Phone: (847) 662-1818
Fax: (847) 662-3001

820 E. Terra Cotta Ave (Rte 176)
Suite 118
Crystal Lake, IL 60014

Phone: (815) 356-1818
Fax: (815) 356-1866