CNA? Akkkkk did that for years... Yes it will damn near kill ANYONE let alone dealing with Bipolar. I had to get out of it !!!!
One thing you can do is "catch the flu"

Get a note from your Doctor and it will give you at least 3 or more likely 5 days to catch a breather so you can think about your options and just give your mind and body some rest.
As BRN said the medical field is horrible when it comes to having an illness of any kind. Seriously you can't continue this way.
Take care of
you.