That is a hard decision to make, I have considered taking time off from school in the past but decided to just take a lighter class load by withdrawing from a class that looked tough. I don't know if that is a possibility in your situation but it worked well for a compromise for me.

Two questions that my college adviser told me to ask myself when I was considering taking time off are 1. Do you think you will be able to perform well in your current state? and 2. Will taking the additional time off effect any financial aid or student loans that you are currently receiving?

I hope you are able to feel more stable soon, that feeling is awful.