How do I say "Have you spoken to A about B yet?" Quick question, how would I say "Have you spoken with your parents about me staying at your house yet?" 

Could it simply be 

我问一下，关于我在你们家住几天， 你跟你的家庭说了没 ？ 

or does 关于  sound too formal？
你跟父母說了我要在你家留宿的事沒有?

The question above should suffice.