YOU SAID:

i really need to poo so i am going to poo right now

INTO JAPANESE

どうしてもうんちがしたいので今からうんちをします

BACK INTO ENGLISH

I really want to poop, so I'm going to poop now

INTO JAPANESE

すごくうんこしたいから今からうんこするよ

BACK INTO ENGLISH

I really want to poop, so I'm going to poop now