quitting it all - I'd never say that death is the answer. But, quitting may be the answer - like Perna said - quit trying to deal with all the things that have dropped on you in these few weeks. Just pick the top one - one that causes the most issue, one that is easiest to fix, one that will have the most positive benefit in addressing it.

Last year I faced death; I had to quit EVERYTHING and just rest my body to recover. No work, no chores, no trips, no shopping.

looking at your list, here are a few respond vs. react choices for you:
- lost my job -- in a few months when you are fully healthy there will be another job. Over the course of your life, you will have a dozen or more jobs.
- kicked out of uni -- this year, next year or in 5 years, university will still be there for you to undertake this degree - when you are healthy, have the money, the time, etc. The chance is not lost.
- guy i was semi-involved with told me he still wants his ex. -- Cliche, but there are other fish in the sea, toss him back. You can drop your line into the ocean again in a bit when you are feeling healthy
- cancer-type symptoms i had a few years ago have returned.. - You have started getting care for this all ready, you have responded. You are taking action to get healthy.
- i dont really have a family anymore. - You are in a time of transition with your family; you are growing apart from them because you are growing up. You can respond by communicating what you need from them right now?
- pdoc on leave. . - this status will change in short order! You also can escalate your support request from simple texting to voice mail OR in-person drop in if the office has staff. You know you must do this to feel healthy
- ive gone off my meds. -- My gentlest response is that you need your doctor's support to make the healthiest choice about medications. Due to my encounter with death, I take many medications for physical and mental health, and there are always risks when you make a medication choice w/o the doctor's advice.

Remember that you have support here, people waiting for your next status update. Even to say "I got through another bloody damn day".