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I have a couple of concerns. Trans-uterine embryo transfer doesn't work very well because, although the embryos may make it into the uterine cavity, the puncture wound will cause a blood clot inside the uterine cavity that may interfere with the attachment of the embryo and subsequent implantation. It is truely a last ditch attempt to transfer embryos. An uncooperative cervix can be spotted during a trial or "mock" transfer in the cycle preceeding the IVF cycle. Cervical dilators or laminaria may be used to open the cervical canal and facilitate the passage of the embryo catheter prior to the IVF embryo transfer. This makes for a much less traumatic (physically and psychologically) embryo transfer.
The second concern is the rate of growth of the embryos. Yes, they may "catch up", but they had not achieved the critical 8-cell stage. Most genetically abnormal embryos arrest development between the 4- and 8-cell stage of development. Since your embryos had not made it over that hurdle, it is dificult to say what you chances are.
Between the trans-uterine transfer and the slow developing embryos, it doesn't look good. I know that's not what you wanted to hear, but I call 'em as I see 'em. But, you never say never, So hang in there.
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