I really identify with your post too. I have had problems with Health Anxiety which co-incided with my period cycle changing. Racing mind, teaful, lots of gas, brain fog, insomnia, feeling I can't cope. This all hit me around 6 months ago. I wish there was a local group as my problem is I work from home so during the day everything keeps churning round. I have tried most things; Mindfulness, vitamin you name it, CBT, Reiki, self help NHS course. I am learning there is a pattern to how I feel as when I have felt very low and made a GP appointment then 7 days later I feel much better. I too yearn for my 'old' self and feel angry that the medical profession seem unable to explain what is causing all these syptoms that appear on mass in the space of 24 hours. The only route I haven't tried is anti-depressants but as I seem to get only 5 very bad days I month it seem a bit extreme. Bigh hugs to you.