Hi there, a bit late to respond to this, better late than never I guess. When I read your post Angel, I thought that you were talking about me.. I could not have written a bio of me better than what you posted - right down to the point where the doctor said you are faking.
It is so frustrating to hear this, again, and again and again. I mean really frustrating, and although you may feel alone on this journey, you are not, cause there are a zillion people out there that have gotten the same reaction from there doctors as you have.
I do not know if you know of a couple of tricks to minimize your symptoms, but fatigue will bring all of what you are experiencing out into the open - everything from the tingling to the weakiness to the cognitive skills - everything. Bottom line here, where u get tired - take a nap, and don't wait till you are bone aching tired...
Another thing that will bring on your symptoms and even some you did not know that you had is heat. For me, its the worst. Again all of the above surfaces, and to manifest things even more, getting to warm bring on fatigue, so you kind of get double whammied.
So get rest when u need it, and stay cool