What supplements are you taking to raise your sodium?
When I started detoxing copper (I didn't use NB at first), I was just using zinc/vitamin c/molybdenum. I began having detox reactions within about five days. I was having allergic reactions (my lips would swell every time I ate), I developed a rash on my chin and my most dramatic symptom was dizziness/fatigue to the point I could not stand. My anxiety was just out of control, terrible panic attacks, racing thoughts, etc. I also developed more severe Acne and a change in bowels.
I think I was a more severe case though. And I was using a protocol that wasn't the best for a gentle detox.