YOU SAID:
my father is having fun with me in the pool
INTO JAPANESE
私の父はプールで私と一緒に楽しいです
BACK INTO ENGLISH
My father is having fun with me at the pool
INTO JAPANESE
私の父はプールで私と楽しんでいます
BACK INTO ENGLISH
My father is having fun with me at the pool
That didn't even make that much sense in English.