Now What!?

For the past two weeks I've been worried out of my mind that I might have MS. I had most of the symptoms and was just waiting for my Dr. app't. so he could tell me what's happeniing. I saw him yesterday and he pretty much ruled out the MS but not completely, He's more concerned with white areas aound center of my brain. (Me too!!!) Now He wants me to have "another" MRI AND CT Scan and possibly a Spinal Tap>:(   I've never had one but have heard that it's terribly painful. Of course I am a pessimistic person who always worries about the worst. BRAIN CANCER!!!!!!!!!!!!!!!!!!Does anyone have any idea what those white spots could be? I need help!!!!!!!!!!!!