YOU SAID:

i guess ill just perish

INTO JAPANESE

私はただ死んで病気だと思う

BACK INTO ENGLISH

I think I'm just sick dead

INTO JAPANESE

私はただ病気で死んだと思う

BACK INTO ENGLISH

I think I just died of illness.

INTO JAPANESE

私はちょうど病気で死んだと思います。

BACK INTO ENGLISH

I think I just died of illness.