MS and Orthostatic Intolerance ?

I have had so many problems over the past couple of years, tried so many different medications, and done so many tests. All that I've found so far is that I have Orthostatic Intolerance, an autonomic nervous system disorder. I've been wondering if I could have MS? I have had an MRI done and I have a lesion about the size of a dime on the right, front side in my gray matter. My Symptoms are: tingling, numbness, dizziness, lightheadedness, blurred vision, double vision, abnormal pupil responses, slurred speech, muscle spasms especially in my eyes and legs, buzzing & vibrating sensations, pain, burning, throbbing, stabbing, & electrical-shock pains, abnormal balance, urgency to urinate & can't hold urination that long, nausea, travel sickness (sometimes), sometimes short term memory loss, forgetfulness, anxiety, feel worse in heat, sometimes its hard to taste & smell, problems swallowing, cold hands & feet, migraines, clustered headaches, pain in lower pack, swelling in knees, extreme pain in legs, extreme weakness, extreme fatigue, chills, cold sweats...etc. I know that many of these symptoms are caused by my Orthostatic Intolerance/POTS...but if any of this sounds like anything other than that such as MS...please post a response. Oh yeah, every time I get a virus or something, my symptoms seem to get worse. I recently had Mono and feel much more warn down. Any Suggestions other than Chronic Fatigue Syndrome, Fibromyalgia, & Lyme's Disease?