Hi Sheri,
Sorry to hear you might have MS, especially at such a young age. My daughter was 19 when diagnosed and is now 25.
I just want to encourage you that optic neuritis when not treated by IV steroids can take months to fully resolve. So don't get discouraged about not having all of your vision back yet. You might still get more back. And also be assured that many studies have shown that the final outcome of ON (or other MS symptoms) is the same whether or not IV steroids are used. In other words, the disability will be the same whether or not steroids are used - the difference is in how quickly it resolves.
My daughter gets sharp pains followed by pins and needles. I'm sure others here will tell you they experience something similar. Nerve pain hurts, and it is not 'nothing' as your doctor said. When it gets bad for my daughter, she takes low doses of neurontin which helps mute the pain.
I can kind of understand your doctor's reasoning about the fatigue and getting a diagnosis, but at that four week followup appt., if you're still battling it, I would press him for something to help. My daughter's drug of choice for fatigue is good old caffeine - lots of it. She actually likes it better than Provigil. Everybody is different. Caffeine just makes me jittery and cranky.
Best wishes to you,
Julie