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Doctor insights on: Expanded Blastocyst

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What is the definition or description of: blastocyst?

What is the definition or description of: blastocyst?

Early development: We use this term for one of the early phases after fertilization, in which the mass of cells produced by the division of the fertilized egg has acquired a central cavity, making it hollow, and one can tell which cells will become embryo and which placenta. ...Read more

Blastocyst (Definition)

We use this term for one of the early phases after fertilization, in which the mass of cells produced by the division of the fertilized egg has acquired a central cavity, making it hollow, and one can tell which cells will become ...Read more


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I am 7 Days past 5 day 2 perfect blastocyst transfer and test this morning showed very faint positive. Is this a good sign?

Too early: The possibility of pregnancy is there but still to early to tell remember spontaneous abortion can take place up to 16 weeks therefore is quite early to tell, if this is going to be a viable pregnancy. Reason why you doctor sees you every 3 to 4 weeks during your pregnacy and follows intra uterine growth with sonograms. ...Read more

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Does collapsed blastocyst have lower chance to implant? Does it take longer than expanded ones?

Does collapsed blastocyst have lower chance to implant? Does it take longer than expanded ones?

Consult Fertility MD: You question is interesting and very specific. The answer requires consulting with an Infertility Specialist. They have extended experiences with the various stages of embryonic growth. ...Read more

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How soon will you see a blastocyst and sac on ultrasound?

How soon will you see a blastocyst and sac on ultrasound?

5-6 weeks: It is not possible to see a blastocyst. The very earliest a gestational sac can be seen is 5-6 weeks from the first day of your last period. ...Read more

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Can implantation of a blastocyst occur a day or so after an abortion?

Can implantation of a blastocyst occur a day or so after an abortion?

Unlikely: While anything is possible, the transfer of a blastocyst to the uterine cavity the day or two softer an abortion would very likely not result in implantation and pregnancy success. ...Read more