YOU SAID:

You should have hit in the head

INTO JAPANESE

頭にぶつかったはずです

BACK INTO ENGLISH

You should have hit your head

INTO JAPANESE

あなたはあなたの頭を打ったはずです

BACK INTO ENGLISH

You should have struck your head

INTO JAPANESE

あなたは頭を打ったはずです

BACK INTO ENGLISH

You should have struck your head