Multiple gestation: The risk of being pregnant with multiple babies at a time.But, the likelihood of developing these complications are very uncommon. Yes, there are a few complications associated with frozen embryo transfer. Are there any complications associated with FET? The fertility doctor always ensures that the number of embryos transferred during the FET cycle gives you the highest possibility of a successful pregnancy, and the lowest risk of multiple gestation (become pregnant with more than one baby). In some cases, eggs are also frozen right after fertilization (day 1) or in their cleavage stage (day 3).ĭuring the frozen embryo transfer procedure, factors that determine the number of frozen embryos to be thawed and used for transfer are: They are then frozen and collected in vials. What happens to eggs during frozen embryo transfer?īefore eggs are frozen, they are incubated until they become blastocyst (day 5) embryos. In such a case, her eggs are collected, fertilized and frozen in her peak reproductive years, to be used at a later time.
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