When you say you have been tested, do you mean my doctors??
I have had those disgusting pooh tests a few times and so have other members of my family and they always come back negative! What a load of pooh tests!!
It's all part of a conspiracy to stop us healing our own worm ridden bodies!! Ok maybe not (...well maybe). But it's a believable theory given the amount of GOVT and University endorsed evidence available saying that at least most of us are sharing or mortal coils with other beings.
Best of luck!! Sounds like you are really getting better! :)
Sorry I can't help in i.d.ing the critters, but I don't think doctors can either...