YOU SAID:

I got free watermelon in the back and I've been over-indulging.

INTO JAPANESE

私は背中に無料のスイカを持っていて、私は過ごし過ぎてしまった。

BACK INTO ENGLISH

I had free watermelon on my back and I was spending too much.

INTO JAPANESE

私は背中に無料のスイカを持っていたと私はあまりにも多くを費やしていた。

BACK INTO ENGLISH

I had free watermelon on my back and I was spending too much.