For past week, i have had back of head headache and pressure, worse when i stand up. Also, after sitting or driving for a period of time, when i stand, i have loud roaring in both ears...sort of like a train going by. I also get weak in my legs, they both feel very heavy and i feel like i may pass out, and balance is very bad now. Went to er, was given ct scan. It was neg. Does this sound like ms?