YOU SAID:

I would have gone had i not needed to have to go to the store.

INTO JAPANESE

私は、店に行かなければ不要私は行っているでしょう。

BACK INTO ENGLISH

If I go to the store I was going.

INTO JAPANESE

場合、私は店に行くつもりだった。

BACK INTO ENGLISH

If I was going to go to the store.

INTO JAPANESE

場合は、店に行くつもりだった。

BACK INTO ENGLISH

If you were going to go to the store.

INTO JAPANESE

場合は、店に行くつもりだった。

BACK INTO ENGLISH

If you were going to go to the store.