Need some support

Hello All! I am 34F, got Covid back in December and from that time I am having a lot of neuro symptoms. I am writing here to get some support, as I am extremely anxious about what is happening to me. At the end of November from one day to another I got severe insomnia, I was not able to sleep, like hardly 1-2 hours per night in best case, with some severe sweating. On the same time I got internet vibration, pins and needles, muscle twitching everywhere in my body every minute and a pop corns, buzzing in my legs and arms, literally every part of my body is involved. While sleep issues has improved, but not solved completely as I am waking up each night at 3.30 am and sometimes I can not fall back asleep…the rest is symptoms does not really go away. currently I did blood works which came back normal, MRI of brain and back which is normal as well. I went to see neuro and she did clinical exam and she did not find anything alarming. I am really worried that it is a beginning of something really bad. Does anyone experience the same? I am trying to take magnesium and other supplements, seems like it helps a bit, but still it does not stop. Also, I want to mention that I had similar issue around 7 years ago after big stress, where I was twitching for 6 months. I am just afraid that Covid woke up some sort of autoimmune issue in my body. I would appreciate any advice how to handle all this.