YOU SAID:

i really need to pee and blow my nose

INTO JAPANESE

私は本当におしっこをして私の鼻を吹く必要があります

BACK INTO ENGLISH

I really have to pee and blow my nose

INTO JAPANESE

私は本当におしっこをして鼻を吹かなければならない

BACK INTO ENGLISH

I really have to pee and blow my nose