Hello Izzy...and a very sincere welcome to you!
I think you can see already that you are not alone here. All those things you've found so impossible to describe to your family and friends will be readily understood here on this forum. That alone can be such a wonderful feeling.
We know how strange and confusing fibromyalgia can be, even after living with it for years and years. There is always something new about it to contend with every few weeks.
Here's hoping that you become a regular member of the crowd, as I hope to hear from you regularly in the future...