Do you take any medication? I have twitches due to mine.
My best friend has fibromyalgia and believed for a long time that twitches similar to the ones you describe were down to that, she reduced medication (especially opiates) and looked for ways to reduce anxiety- therapy, meditation, avoiding social media or looking things up online etc… and the twitches have almost gone.
i understand what it’s like to have health anxiety but the more you focus and worry about certain things the worse they can seem. Stop assuming the worst and don’t try to sleep unless you are actually ready to so you don’t lie awake worrying.
Improve your sleep hygiene and stay off your phone, read a book or even listen to an audiobook on a timer so you are focusing on that and not your internal worries. Get up early and try to be as active as possible so when you go to bed you are exhausted.
I used to have panic attacks the minute I closed my eyes to sleep, my mind would start racing and I’d get myself into more and more of a state.
I now don’t go to bed until I know I’m ready to sleep and I leave my phone turned off. I often read as a distraction if I’m feeling anxious and often wake up with my kindle next to me where I’ve fallen asleep and dropped it.
I use aromatherapy oils which don’t work for everyone but I found useful, if I’m feeling very anxious or stressed I have a bath with a lavender bath bomb and aromatherapy essentials oil, I put it into my diffuser and use pillow spray. DP wasn’t amused to start with but he admits he sleeps well now!
I use an Alexa with rain or wave sounds and try to focus on that instead of my breathing so I don’t hyperventilate.
If you really feel you have a physical condition then go to your GP and show them the multiple posts you’ve made about how much you are worrying, at the end of the day no one on mumsnet can diagnose anything and people with similar symptoms could have them for different reasons so it’s impossible to compare yourself to anyone in the hope of getting answers.
It sounds like you have a a lot going on that you are struggling with, anxiety presents itself in lots of different ways.
I hope you get some answers and feel better soon, try to find some real life support and see your GP as soon as you can. Definitely look into if it’s side effects from medication and avoid caffeine and maybe try herbal tea? X