Have you ever had "nub theory" say you were having a boy, and ended up having a girl instead?

Kelly • Registered Nurse ❤️. Married since 2015. Experienced 4 losses. Rainbow baby William Logan born on Mother's Day 2017 👶
Just curious about this.  Please don't answer if you've never been in this situation or if you don't know about nub theory.  My nub is showing "boy" but I was so certain that I was having a girl.  Just wondering how accurate it is.  

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