YOU SAID:

I haven't been able to sit for a week

INTO JAPANESE

私は一週間座ることができませんでした

BACK INTO ENGLISH

I couldn't sit for a week

INTO JAPANESE

私は一週間動けなかった

BACK INTO ENGLISH

I couldn't move for a week.

INTO JAPANESE

私は一週間動けなかった

BACK INTO ENGLISH

I couldn't move for a week.