Will post again with questions/comments on everyone's input here when I can think a bit more clearly.
mahagonny, wish I had personal experience with ketamine to share, but unfortunately have never tried it. I have been undergoing TMS, which is another treatment that tends to be used only when many other treatment attempts have failed. PM me if you're interested in that at all.
Was at a treatment this morning. Went out to the stairwell, 5 stories up, staring down at ground; complete lack of discomfort or giddiness I normally feel when looking down from a height. I told myself I would finish out the spring term before I thought anymore about suicide, but I guess I just had a heavy sad mood this morning that was hard to shake off. Called the suicide hotline, but was not able to make myself understood very well, especially regarding where I was. Should probably stick to text lines from now on. When the hotline ended the conversation and said goodbye to me I was still on that stairwell, leaning over the railing, and feeling stuck between going home or going over.
After a couple of hours, feelings had drained and I just felt blank. Headed home.
SO should have expected me back hours ago. Did not attempt to message me or inquire why I was away so long when I got back. Am not sharing the experience with him as I suspect it will do no good for either of us.