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You have to wait until 18 weeks so just over 4 months, anytime before that and the baby's genitalia looks similar. At any point before the 18 weeks the doctor can't tell what gender it is. After the 18 weeks the baby has developed enough that is it safe for the doctor to do an ultra sound and see what gender the baby is. But it is always good to ask how clearly your doctor can tell between the babies genitalia.

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13y ago

What else can I help you with?