Waiting for first treatment

I start Solu-medrol treatment on 2/15 and am tired (not sure if this is MS fatigue or too long hours at work) and so am anxious about the after effects of the treatment.  I know myself pretty well, and know that once the needle is in my arm most apprehensions will disappear - something told to me once that "the anticipation of an event is usually more exciting/exhilirating/worrisome than the actual event."  I hope this writing gets a little of the worry off my mind -