YOU SAID:

I'm going to sit because I have a pain in my waist.

INTO JAPANESE

私の腰の痛みを持っているのでを座っているつもり.

BACK INTO ENGLISH

have a pain in my lower back because going to sit.

INTO JAPANESE

座るつもりなので私の腰の痛みがあります.

BACK INTO ENGLISH

are you going to sit there is pain in my lower back.

INTO JAPANESE

君が座っている私の腰に痛みがあります.

BACK INTO ENGLISH

you're sitting my lower back pain.

INTO JAPANESE

私の腰痛を座っています.

BACK INTO ENGLISH

sitting my lower back pain.

INTO JAPANESE

私の腰痛を座っています.

BACK INTO ENGLISH

sitting my lower back pain.