Im sorry your getting hit from ALL sides ... Bless your heart ((( Hugs )))
The only thing I can really add is in regards to telling your employer about your Bipolar ... Personally I would never disclose this and the reason being I have seen family members and close friends inform there employers about Bipolar and other mental health issues ... The end result was they eventually ( within 6 months) lost there jobs .. of course they weren't fired due to "bipolar or whatnot" the employers always had "other reasons" for it ..
I know people should be covered by the ADA laws ... Of course you can disclose to your employer and if you do lose your job you can always sue for wrongful dismissal, But thats an issue that the courts would get involved and thats a very slow process meanwhile you still have bills and need to eat .
Do you have short or long term disability thru your employer? I once used my Long term disability My doctor just stated I needed to be off work for 60 days .. there was no specific reason or diagnosis given .. My employer asked me what was wrong and my reply was its a private matter and said that under HIPPA laws I did not have to discuss my health with them.. were they happy? Nope ...
SO if you have short term or long term disabilty thru work maybe you can look into using them ... maybe taking a " break " from your job would allow you to take a breather and kinda regroup..
As far as your mother goes ... ugh ... Im going to be a smarta** here and saw go get her a muzzle

As far as her threats to evict you goes... Pffft its takes on average 4-6 months to legally evict someone ... Blah let her " bark"
As far as losing your health insurance goes ... every county has assistance for mental health .. When I first starting seeing my Pdoc and Tdoc I had fantastic health insurance .. it ended Jan 1st of this year .. I am still being seen weekly for Tdoc and every 2 months or sooner with Pdoc .. They also contacted and filled out all the paperwork with drug companies so I now receive stock bottles of all my meds .. So there is help if for whatever reason you lose insurance .
You have sooooo much on your plate at one time I really feel for you .. Sometimes we all need to just take a big step back. When I get so overwhelmed I often sit down and write things down on a legal pad 1.things i can control 2. things i cant control 3. and things that i can delete from my life to make me less stressed .
Hope I didnt ramble to much .. I tend to ramble often... I use to be able to make sense with alot less words ... Damn my meds Hahahaha
Welcome to PC I hope you can find the support you need here,,, I know I did