YOU SAID:

my life has been nothing but pain

INTO JAPANESE

私の人生は痛み以外の何物でもなかった

BACK INTO ENGLISH

My life was nothing but pain.

INTO JAPANESE

私の人生はただの痛みだった。

BACK INTO ENGLISH

My life was just pain.

INTO JAPANESE

私の人生はただの苦痛だった

BACK INTO ENGLISH

My life was just pain.