My left arm has been numb for several weeks now, and in the past week or so, the rest of the left side of my body has been becoming numb too. So, yeah, I think it's normal.

Hopefully both our problems will clear up (remit) on their own soon.

If you think you need to, go see your neuro about the arm weakness. If an MS symptom is really bothersome or if it seriously interferes with your daily life, there are sometimes medications that can help with the problems.