Dear Time2, your posts and the replies you receive show to us how very caring people are. In that respect you have done a service to us all, and I thank you.
A friend came to me today for a coffee. I had no idea that she has/had been suffering from anxiety for a few years, due to something that happened to her a few years ago. She told me that her doctor recommended getselfhelp.co.uk which gives information about Cognitive Behaviour Therapy and Mindfulness for anxiety. (The videos page takes a little while to download). You might like to look over the information. Cognitive Behaviour Therapy is well known, and can also be done with a group of people through; you could ask your NHS contact or ask your doctor.
I myself, a year or so ago, had a problem with crying if I was just slightly stressed and was referred to ‘Silver Cloud’ through the NHS see nhs.uk/Conditions/online-me... I did on-line modules each week, and it did help.
There is also Emotional Freedom Technique – there are lots of websites on the internet. It involves tapping with your finger the acupuncture points on your face and chest. It is very easy to do, and might help temporarily.
All the advise others have given you about using your campervan are so good; I envy you the chance to do that, so please do try, especially as the nice weather is now starting. I don’t think anyone mentioned a portable oxygen concentrator, which charges from the electricity and then has a battery so you can take it out and about with you. If you don't already have one I would think that one can be loaned to you by the company that delivers your oxygen. Some people I have read on this site are given 4 small compressed oxygen cylinders which would also help you get out and about. You could perhaps take your static concentrator that you use at home on holiday with you for use in the campervan.
I hope you feel very much better soon. A hot water bottle might help when you have the pain, although your doctor should surely have given you something to stop the pain.
Love from Christine