Hi Whrk,
I am sorry you are feeling so bad. I am trying to think of anything I/we can do to help you.
I can tell you I had most (but not all) of the things you mentioned, and they have subsided LOTS. In particular, the stuff moving up and down my spine - yes, it felt like worms - that was SOOO painful - actually indescribable pain. That cleared up when I started taking antibiotics. I only had one time the back pain came back again for about 4 days. I don't know if you can use antibiotics if you are pregnant tho.
I could certainly tell you everything that helped me. But I dont want to tell you things you've already tried, or make you feel worse. I do know that more than one of us have had symptoms improve using different methods.
I don't eat processed foods, have LOTS of raw, organic vegetables and some fruit. I eat lots of live probiotic types of things, fiber...
Well, I am being like a guy in that I want to "fix" you.

(I'm female, not male.)
Please let me know what I can do to help. Like I said I would be happy to tell you what has worked for me, if you would like. And I know ohters here are symptom free and can also help you.....
I am sending you a hug and I will pray for you. I wish I could do more!
PS- I have never met w Dr Staninger, but you might want to do a phone conversation w her. I can tell you how to call her on the Internet for free or close to free (phone charges - her appointment is two hundred and something I think).