YOU SAID:

I tripped and fell down my staircase but it was okay because my headset was falling off

INTO JAPANESE

私はつまずいて階段を降りましたが、ヘッドセットが落ちていたので問題ありませんでした

BACK INTO ENGLISH

I stumbled down the stairs but there was no problem as the headset was down

INTO JAPANESE

私は階段をつまずいたがヘッドセットがダウンしていたので問題はなかった

BACK INTO ENGLISH

I stumbled on the stairs but there was no problem because the headset was down

INTO JAPANESE

私は階段でつまずいたがヘッドセットがダウンしていたので問題はなかった

BACK INTO ENGLISH

I stumbled on the stairs but there was no problem because the headset was down