YOU SAID:

I don't like doing this for long, my side hurts.

INTO JAPANESE

私は長い間これをやって好きではない、私の側が痛い。

BACK INTO ENGLISH

I have not liked doing this for a long time, my side hurts.

INTO JAPANESE

私は長い間これをやりたがっていない、私の側は痛い。

BACK INTO ENGLISH

I have not wanted to do this for a long time, my side hurts.

INTO JAPANESE

私は長い間これをやりたがりませんでした、私の側は痛いです。

BACK INTO ENGLISH

I have not wanted to do this for a long time, my side hurts.