The damage to your credit is usually the nonpayment/collections prior to bk, rather than the bk itself (not that bk has no effect). I know, it's a Big Deal that we want to avoid at all costs, but it might be worth at least 1 free consult with an attorney to explore your options and also consult with a reputable (preferably nonprofit) credit counseling agency. That's not to say you can't also consider other options, but just be sure to think critically as you go about this. There are a lot of predatory companies out there.
I'm not sure what articles I'm allowed to link here, but try Googling: "bankruptcy effect on credit score." You'll see most of the articles say the same thing: the deleterious effect comes not from the public record of bk, but from the previous nonpayment and CO (both of which you presumably have; I certainly do).
Tread carefully but also don't be afraid to do what you have to do for your financial/physical/mental health.
