YOU SAID:

stop i need to go pee really bad

INTO JAPANESE

やめておしっこをする必要が本当にある

BACK INTO ENGLISH

I really need to quit and pee

INTO JAPANESE

私は本当にやめておしっこする必要があります

BACK INTO ENGLISH

I really have to quit and pee

INTO JAPANESE

私は本当に辞めておしっこしなければなりません

BACK INTO ENGLISH

I really have to quit and pee