YOU SAID:

My girlfriend pooped in my bed

INTO JAPANESE

私の恋人は私のベッドの中でうんざりしていた

BACK INTO ENGLISH

My boyfriend was tired in my bed

INTO JAPANESE

私のボーイフレンドは私のベッドで疲れていた

BACK INTO ENGLISH

My boyfriend was tired from my bed

INTO JAPANESE

私のボーイフレンドは私のベッドから疲れていた

BACK INTO ENGLISH

My boyfriend was tired from my bed