Good doctor: Sounds like you have a good doctor. I figure he/she will repeat the ultrasound in two weeks. By that time you will see a heart beat. Around 12 to 14 weeks your doctor will send you for first screening, an ultrasound and fingerprick test. This is a screening test for chromosomal abnormalities, which can be associated with an abnormally large yolk sac.
Answered 4/25/2014
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