Your work stress could be your biggest issue. Lack of sleep can easily mimic PCS. Add a high stress from work and you could just be suffering from work overload. The anxiety of the bump may have just put you over the edge.

I doubt you will get better until your work stress is moderated.

I gave up on a high stress work environment in 1978 when I realized what it was doing to my personality and non-work life. It took a while to make changes but they were worth it. Life is too long to live under stress.