Patient's question:
Sure, here is the translation of the content you provided:```
No
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Doctor's answer:
After embryo transfer for 15 days, HCG indicates no pregnancy, suggesting that the embryo development has stopped, and vaginal bleeding may occur, possibly indicating the onset of menstruation. It is recommended that you have your blood HCG rechecked. If it remains negative, it indicates that the embryo development has stopped, and you need to have a follow-up ultrasound and discontinue progesterone use.