Good morning everyone!
I'm so sorry I wasn't here last night to read and post. I was attending a family function.
Welcome to the thread Flyingmonkey. I hope you are ok. (Well, I know you are not, but as ok as possible in circs and walking sounds like a good idea, I hope it helped a bit.) It's totally understandable that you feel so stressed atm. Please, please try and get some support for yourself and focus on YOU for a bit. What Missusee and Ticklingcheese say about self care is really important I think. And please don't feel like a failure.
We are all just muddling along, "doing our best" on here with various degrees of success. And sometimes, just doing our best is all that we can do.
What prompted me to start this thread was the realisation that I was sinking a bit, getting rather depressed and anxious, and that I wasn't really responding well to my dd in that state (even though my interactions with her contributed to it in the first place) and it all becomes a vicious circle. So please try, if humanly possible, do take some time out just to focus on yourself
and keep posting on here if it helps.
And please don't take your son's "blame" too much to heart. As we all know on here, troubled teens lash out at who they love the most (even though they have a very strange way of showing it). Their aim is also (as has been explained to me on here) to make themselves feel better by deflecting blame and criticising others. [Xeroxarama the hate behind the words is horrible I know. I struggle with it the most.]
And
to Whoops75 and the other parents on here who are dealing with teen drug use. It must be a very scary thing 
Staywithmemyblood glad to hear your dd is a bit calmer now and I hope you can get a GP appt promptly. You and MissusSee make such a good point about "refusal" being an integral part of a distressed adolescent's psyche (refusal to attend school, refusal to obey rules, refusal to engage with therapy). How ludicrous it is that health services don't take this in to account or adapt to it.
I know health funding is at an all time low, but I saw a snippet on the news the other day about how the NHS had set up teams of "out-reach" workers (experienced psychologist and mh nurses) who visited the area immediately around Grenfell Tower to try and talk to distressed residents who were too reluctant or busy to go and seek help themselves.
It shows it is possibly and it seemed like such a good idea. Something similar for "non-engaging" distressed teens would be so helpful for them, and for their parents who are at their wits end and
left to deal with really serious and complex problems virtually alone.
Squeegle Sorry things are still so stressful. The lack of available support and resources is indeed woeful.
McMen71 How was the show? I hope you all had a wonderful time! And I agree with the all the others, that it is SO important to share the good bits, as it is those snippets that give us all hope and keep us all going. So please don't apologise for it! Good luck with revision "support"!
Hang in there Rosemartha 
Somewhereovertheroad 
Alone1971 it is no fault of yours that adolescence can be a very confronting thing. Hormones have stolen our children! And sorry you are dealing with teen issues and elderly parents; that must be incredibly demanding.
Actually Alone1971 and McMen71 I'd be really interested to know if the ADs help you both for very selfish reasons, as I have been offered them too but too scared to take the plunge atm!
Lightandairy
hope you survived the party! You deserve a
for helping out with other people's teens! Great to hear that Young Minds were so helpful too.
Welcome back to the thread Siamesekit . Glad things are calmer for you and your ds now. I agree that distress over our teens does tend to "pop out" at various times when you least expect it. I'm Catholic (lapsing) and when I make it to church, I inevitably find myself sitting in the aisles having a bit of a wee cry. Possibly because that is the only time of the day when there is "space for it" or it could just be the poor quality sermon 
Waves to Billybagpuss, Daintytoes, TicklingCheese and everyone I have missed (sorry, there are too many to mention!).
And as MissusSee so rightly said, it is "easier said than done" to try and focus on ourselves when all hell is breaking out around us. But we need to do it Po Ts! On that note, please try and take some time out for yourselves this weekend x