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Doctor insights on: Approximate Time Span Between Fertilization And Implantation Of Blastocyst

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Is hCG produced at time of fertilization (when sperm meets egg) or only when implantation occurs?

Is hCG produced at time of fertilization (when sperm meets egg) or only when implantation occurs?

A little after: Hcg can be screted by the embryo after fertilization and before implantation. However, HCG is likely detected by testing after implantation. ...Read more

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Implantation (Definition)

One common meaning refers to the process by which an embryo attaches to the uterus of a woman so that she is pregnant. Many think of it as 'sticking.' implantation in humans always occurs when the embryo is between 6-7 days old. A very popular concept on the internet now in 2012, 'implantation bleeding, ' is speculative ...Read more


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What is the embryo doing from time of fertilization to implantation?

What is the embryo doing from time of fertilization to implantation?

Floating & growing.: The embryo floats down the fallopian tube and enters the uterus where it will implant itself in the uterine wall and establish a blood supply to the mother for further nourisment to continue its development. While floating through the fallopian tube, it has enough nourishment inherent in the egg to divide and grow. ...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

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Does spotting sometimes occur during fertilization? Not implantation, but fertilization. Also, are bananas ok to eat during the tww?

Does spotting sometimes occur during fertilization? Not implantation, but fertilization. Also, are bananas ok to eat during the tww?

Anytime: Spotting can occur at any time in a cycle, there is nothing about fertilization that causes spotting. They are not related. You can eat bananas anytime you like, they are good for you. Best wishes. ...Read more

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Is it true that the copper IUD allows fertilization but not implantation?

Is it true that the copper IUD allows fertilization but not implantation?

Works against sperm!: Copper ions prevent pregnancy by inhibiting the movement of sperm, because the copper-ion-containing fluids are directly toxic to sperm. ...Read more

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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