Hi Criminy, as a fellow sufferer (bipolar, BPD) and with a DH who struggles with it, I totally get where you are coming from. Before I say anything else let me say you have NOT messed up and you deserve huge credit for reaching out for help - I know I still find asking for help almost impossible. Without question your main priority needs to be getting the support you need.
How to manage your DH is almost as hard. In my experience, my DH loves me and wants to be supportive but the unpredictability of my illness takes its toll. Essentially he wants to trust that I am on the road to recovery (however long it takes) but each breakdown makes that harder. DH (and others) are also hypersensitive to any of my moods (almost to the point where I don't feel I can have even normal feelings of sadness, worry etc) so sometimes hide how I am feeling, certainly the SHing, give an image that on the whole it's all ok and lean on my therapist to talk through the stuff that is definitely not. Honestly, at this point in time I don't really know how else to handle it.
Thing is I have a lot of sympathy with anyone trying to support someone suffering from a mental health illness as there are some factors that make it a different challenge than if the person suffered from a primarily physical, life altering illness. This is in no way to underplay how difficult it is to support anyone with an enduring and/or terminal illness and fully understanding that the impact can be as much on the mind as the body.
Firstly, as a society, we are still in the process of accepting mental health as a real illness and there is still a hell of a lot of ignorance just on this alone.
Secondly, even among those who do accept it, the level of knowledge in relation to basic diagnoses and their differences is very low usually unless they are suffers themselves. Thirdly, mental health services (even private) make very little provision for anyone supporting. Finally, the illness itself is so unpredictable and can be very harmful to those around the sufferer.
So taking me as an example - Over the last 18 months, I have gone through periods of severe depression, three suicide attempts and 2 separate inpatient periods of 4 weeks each. Over this time I have had consultants, therapists, support groups coming out of my ears at every step and everyone (rightly) attributing my behaviour to my illness and generally treating me a bit like glass. Part of my condition also means that I effectively erase or dissociate from anything most traumatic or really unpleasant events so on the whole the last 18 months are pretty sketchy.
What did DH get? Months of a wife who was totally fine to go to work and show enthusiasm for anything work related but in the evenings and at the weekends would either sleep all weekend or cry about how she hated everything, lost all interest in him and the kids apart from snapping or shouting at them culminating in trying to kill herself. he's then told that wife has an illness he doesn't understand but that he should immediately forgive and forget all past behaviour, there would be years of therapy and medication (no medication wasn't enough, it was about 20%) and he could expect relapses in recovery at any time. At no point did any professional ask him how he was feeling, acknowledge that he had also had gone through trauma and may continue to do so or offer any suggestions as to what he should do if he needed support (and this was at one of the best private hospitals in the country....) So he couldn't talk to me, he didn't feel confident in talking to his friends and his parents refused (and still do) to believe that I was actually ill - he had no one. And all this time he is expected to be unconditionally supportive and that if he walked out he would be judged for leaving an ill wife.
I don't know about you but I feel it's as bad for my DH as it is for me. Thankfully things have been really good for a few months now and we talk about it as much as we need. Fear of abandonment is one of my core issues but I don't want to be responsible for DH being unhappy so I told him that if he got to the point where he was miserable and wanted to leave, I would be OK with that (eventually). The effect of that was amazing, it seems as though as he doesn't feel trapped, he's 100% recommitted to staying.
I'm sorry that at the end of this essay (!!) I don't really have any advice for how to deal with your DH but if you haven't already, it might help a bit if you show that you understand how crazy difficult this is for him too and if you are seeing a professional, ask that you spend a session with DH as well to talk about how you manage your illness as a couple thinking about both your needs.
I really wish you all the best - you are absolutely not alone on this journey❤️