I've been kicked to the curb twice because of my bipolar, and a couple of times before I was diagnosed. It seems employers will find a way to get rid of a worker when they know you have a mental illness, since they legally can't fire you for having a protected disability (and BP falls into that category). I've never held a job for five years, but I lasted 2 1/2 years at an assisted living facility whose office full of lawyers figured out how to let me go without running afoul of the Americans With Disabilities Act. I had to take medical leave for three weeks due to bipolar symptoms, and when I got back I was fired.

I'll never forget what the corporate nurse said as I was packing up my stuff: "It's not your fault, it's just that your work performance has been consistent with your diagnosis. It's a medical problem."

Sorry to be such a downer, but you would do well to start looking for another job while you're still employed. Not only would you be more desirable to employers because of your loyalty, but your job stability is impressive. A lot of BPs (myself included) have trouble sticking with one job for any length of time. Wishing you the very best of luck!