I kinda started out like you and until they gave me a 5 day steroid drip.....then it all slowed way down. This is when I started Betaseron (2003) and I have only had minor issues since.
You really need to mention the meds to your doc in case he/she doesn't think what you are taking is working for you. Give the new drug a decent amount of time to work......and maybe ask about a steroid drip......
I'm sure some here may disagree with me, but I had a good response with the steroids and have been fairly stable since (only 1 new lesion since 03).
Everyone is like a snowflake with this disease so hang in there!