YOU SAID:
i have had a dog and a cat in my room
INTO JAPANESE
私は私の部屋に犬と猫がいました
BACK INTO ENGLISH
I have a dog and a cat in my room
INTO JAPANESE
私は私の部屋に犬と猫がいる
BACK INTO ENGLISH
I have a dog and a cat in my room
That didn't even make that much sense in English.