What is the reason for not seeing a nose in a prenatal ultrasound at three months of IVF pregnancy?

Patient's question:

Sure, here is the translation of the content you provided:
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No
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Doctor's answer:

This can be seen, but it's not easy to determine. Generally, it can only be clearly identified around the 5th month of pregnancy. However, it is still recommended that you have a color ultrasound after the 5th month of pregnancy. Wishing you good health