YOU SAID:

I have not slept one wink

INTO JAPANESE

私は一瞬も眠っていません

BACK INTO ENGLISH

I haven't slept for a moment

INTO JAPANESE

しばらく寝ていません

BACK INTO ENGLISH

I haven't slept for a while

INTO JAPANESE

しばらく寝ていません

BACK INTO ENGLISH

I haven't slept for a while