YOU SAID:

I can't believe my eye is going to feel bad all day, maybe.

INTO JAPANESE

多分、私の目が一日中気分が悪くなるとは信じられない。

BACK INTO ENGLISH

Perhaps I can not believe my eyes feel sick all day.

INTO JAPANESE

多分私は私の目が一日中気分が悪くなると信じることができない。

BACK INTO ENGLISH

Perhaps I can not believe my eyes feel sick all day.