What are the chances of getting the gender wrong at an early scan? We had a scan at 15+6 to find out the gender early. We was sure it was a girl as my brother is the only boy out of 5 children and my partner is the only boy out of 6 children we also both already have a girl each. But to our surprise we was told he was a boy, so happy but now we have out 20 week scan tomorrow and I'm worried they could have got it wrong before as was so early??xx