YOU SAID:

i woke un in the middle of the night and i noticed she wasnt by my side

INTO JAPANESE

真夜中に目が覚めたんだけど、彼女がそばにいないことに気づいた

BACK INTO ENGLISH

I woke up in the middle of the night and realized she wasn't there

INTO JAPANESE

真夜中に目が覚めて、彼女がいないことに気づいた

BACK INTO ENGLISH

I woke up in the middle of the night and found her gone

INTO JAPANESE

真夜中に目が覚めたら彼女がいなくなっていた

BACK INTO ENGLISH

I woke up in the middle of the night and she was gone

INTO JAPANESE

真夜中に目が覚めたら彼女はいなくなっていた

BACK INTO ENGLISH

I woke up in the middle of the night and she was gone