I was wondering if a doctor can accidentally implant a woman while pregnant with a stranger egg, leading to the chimerism. In example, the woman is an ivf surrogate, the ultrasound doesn't reveal an existing pregnancy. She is inserted with a catheter. Is it possible? If so, how would he bypass the

By <name>/u/New_Fan_7665</name><uri>https://old.reddit.com/user/New_Fan_7665</uri>

mucus plug, when the womb locks, and the pregnancy usually releases hormones to stop another pregnancy, I read. I was wondering if a doctor can accidentally implant a woman while pregnant with a stranger egg, leading to the chimerism. If so, how would he bypass the mucus plug, and the woman hasn't received any hormone therapy. Also, how would the catheter not feel the egg cell? submitted by /u/New_Fan_7665 [link] [comments]

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