n-652 congratulations

[trustno1]

I went to my citizenship interview yesterday and everything went smooth. the officer gave me the n-652 form saying i passed the english and civics test, and "congratulations your application is recommended for approval." during the interview i told the officer i worked for a family member for a month just to help out, and i dont have documents to prove i actually did.
my question is can anything go wrong at this point? can the oath be denied also?