YOU SAID:

I am sorry if I have upset you.

INTO JAPANESE

気分を害してしまってすみません。

BACK INTO ENGLISH

I'm sorry for being offended.

INTO JAPANESE

気分を害してごめんなさい。

BACK INTO ENGLISH

I'm sorry to offend you.

INTO JAPANESE

あなたを怒らせてすみません。

BACK INTO ENGLISH

I'm sorry to offend you.