Hello lauraloo....

I would say that if your job is making you sick...then it's time to look for something different.
It might not be your dream job, but at least it will be a change, right? New things to think about? New people to meet?

I think once you make the decision to look, then you'll be happier with the knowledge that you're doing a positive thing for yourself....

Let things cool down with your friend. We all need a break from people from time to time.