YOU SAID:

I hadn't slept in a week I was weak I was awake

INTO JAPANESE

私は一週間も寝ていなかった

BACK INTO ENGLISH

I had not slept for a week

INTO JAPANESE

私は一週間眠らなかった

BACK INTO ENGLISH

I did not sleep for a week

INTO JAPANESE

私は一週間寝なかった

BACK INTO ENGLISH

I did not sleep for a week