YOU SAID:

I am currently doing nothing but writing and thinking

INTO JAPANESE

私は現在何もしていませんが、書くことと考えています。

BACK INTO ENGLISH

I am not doing anything now, but I think that writing.

INTO JAPANESE

私は今何もしていないが、私はそれを書くと思う。

BACK INTO ENGLISH

I have not done anything now, but I think that I will write it.

INTO JAPANESE

私は今何もしていないが、私はそれを書くと思う。

BACK INTO ENGLISH

I have not done anything now, but I think that I will write it.