Hi Hun. *Hugs*. I understand what you are going through....im going through a similar experience.
It is very very hard knowing that something is wrong, but not knowing how serious it is.
I have been told that I have weakness and spassticity in my limbs, its called spasstic paraplegia, im undergoing tests to find out what is causing it....at the moment its looking like I have a rare genetic disorder or a progressive form of ms. Im slowly losing normal use of my limbs,at the moment my symptoms are relatively mild but I fear for the future, im also beyond scared that I have passed a serious genetic disease to my daughter.
I really hope you get the result that you want. It is tough dealing with neurological conditions as it sometimes takes ages for a diagnosis.