YOU SAID:
I have to go to the washroom
INTO JAPANESE
私はトイレに行かなければ
BACK INTO ENGLISH
I go to the bathroom
INTO JAPANESE
トイレに行ってもいいですか。
BACK INTO ENGLISH
May I go to the bathroom?
INTO JAPANESE
トイレに行ってもいいですか。
BACK INTO ENGLISH
May I go to the bathroom?
That didn't even make that much sense in English.