Pare, if what I say below puts you off posting, please ignore and keep posting, I will shut up if it helps. The thing we most want is you to keep communicating with someone. I'm sure I'm far from the only one who has been wondering daily how you are and hoping to hear from you.
I am so relieved to see you posting, but very worried by your state of mind. If you feel a sense of peace now, while you are still here - can you not postpone your decision at least? Given the finality of it could you consider that you have not that much to lose by waiting a little while to see if things change? I think you need to go back to your GP now, never mind what he said about when to go or test results, this is much more important. Tell him that you need further help, not just what has been offered. Please be brutally honest with him about how you feel.
Also you are under the influence of a drug right now which your brain is still getting used to, give yourself a chance with that, it can make people think in ways that aren't authentic to them.
You've made it this far, and it hasn't been easy, has it? But that is not a reason to give up now. It is a reason to make some sense of this. Don't end everything because the solution is hard and difficult to reach, when it could be there in your future. You are worth fighting for, you mustn't believe yourself when you think otherwise...that is the illness talking.
Your death would be a catastrophe for your family, but more importantly - what about you? They say depression is anger turned inward. You have been through trauma that you have not been able to properly process, have never had real help with. Your anger isn't really with yourself. Please don't give up over the NHS delays and problems. Please. Give yourself a chance, you deserve a chance to recover and have a life that you can be content with. Don't let the bad things that have happened take that from you.
You say the decision has been taken out of your hands...do you mean that something could have been done differently that would have allowed you to believe in a future...? Please hold out for that, please hold on. This is about everything.
Please do ring the Samaritans. If I've said something wrong or upsetting then ignore me because I am no expert and I didn't even know whether to post. We all think you are worth fighting for though, we believe in you.
I don't want you not to post because of getting hassled so I'll go now. Please do come back.