Multiple Sclerosis or A.D.E.M?

I'm a 19 year old female, extremely healthy before all of this happened, never had a health problem with anything. In January/February I experienced a sore throat/fever sickness for about a week and then began experiencing bad 'brain fog', unable to concentrate and it was getting progressively harder to walk with my left leg. I had an MRI and it determined I had inflammation about 4-5mm in my brain and a questionable lesion on the right side of 9mm. I was put on Solumedrol which I stopped short because my body couldn't handle the 1000 mg I was given. Since stopping the steroids, I've been tired but can walk again. I then had a second MRI which looked at my spine which is completely normal, no lesions. I had a LP, which came back normal except I am .66 (I don't know of what my neurologist is terrible) which is borderline normal/abnormal. I have no bands or abnormal levels in my cells,proteins. A few weeks after my LP I experienced low grade fevers everyday, nausea and fatigue. I know MS is not associated with fevers. Now i've been feeling a little more normal for the last week. I can walk perfectly again and my brain fog is going away. But i haven't been treated for MS or anything else. Could it still be MS if I'm starting to feel 'better' again without treatment? I also read about A.D.E.M which kind of makes sense since I was sick before this all happened, but I don't know what determines between A.D.E.M and MS.