I have been taking weekly interferon beta 1a injections since may. But for the last few days I have been feeling weakness in legs and difficulty in balancing body. One doctor told that it is myalgia. Another told to meet doctor. My appointment with a local renowned neurologist is on 24 Oct. Feeling restless,purplexed and broken as even after so much is being spent again i am feeling like i was feeling during diagnosis. Please suggest what to do Thank you