YOU SAID:

I am outside swimming in the swimming pool

INTO JAPANESE

私は屋外のプールで泳いでいます

BACK INTO ENGLISH

I'm swimming in the outdoor pool.

INTO JAPANESE

私は屋外プールで泳いでいます。

BACK INTO ENGLISH

I am swimming in the outdoor pool.

INTO JAPANESE

私は屋外プールで泳いでいる。

BACK INTO ENGLISH

I am swimming in the outdoor pool.