YOU SAID:
Ugh, I have to wash my hair today.
INTO JAPANESE
ええと、今日は髪を洗わなければなりません。
BACK INTO ENGLISH
Well, I have to wash my hair today.
INTO JAPANESE
さて、今日は髪を洗わなければなりません。
BACK INTO ENGLISH
Well, I have to wash my hair today.
That didn't even make that much sense in English.