I have most of the Multiple Sclerosis symptoms but am having trouble getting the doctors to take me seriously.?

I am in my 40's but have had many of the symptoms for the last 8 yrs or so. I now have episodes where I cannot walk unless I use a cane, have terrible leg pain and random muscle spasms, vertigo and have even lost my job because of it. Does anyone know what I can do or who I can see in or near Waco, Tx.? I am tired of going from one doctor to the next and then being referrred to the first doctor and starting over again. I have been told that I should have a MRI but none of the doctors have ordered it, or for that matter no tests except the EMG, which came back normal. ANY help would be appreciated, I know little about what I am facing or what to do. All I do know is I have about 90% of all the MS symptoms and am soooo tired of all the pain. I have been run in circles for 12 months now and my insurance runs out in November. ANY help???