I'd seriously think about taking it. Even if it is temporary and you decide to move on in 6 months or a year. It isn't ideal in some ways, but it may go a lot further towards helping your mental feeling then you realize.

I'd also agree that you get established with a physician and talk to them. Even a GP can a lot of times help walk you through this while you start your new job etc.

And just cause you take a job doesn't mean you have to stop looking for your passion. Keep up the search but take a job.