Not that everyone would say, "Put it back!!!!" But if you really wanted to know the sex to plan and prepare, then the outcome was different than originally expected. (All people don't "have" to know this. Most planner types prefer it.)
This happend to my BIL and his first wife. (Their first/only child together. My sister's step-son.)
Just a random thought about finding out the sex at 20 weeks.
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