I've had this, too. Sometimes my eye twitches, too. It's been doing it for years - the doctor said it's just stress (their dx for everything it seems!!!)
But I believed him because it was during the time I was working full time in the office - not here at home - and it was incredibly stressful.
I asked my Neuro about it and he said not to worry about it - it's not a "tremor" but just a muscle twitching on it's own and not related to my MS. OK - I'll believe it for now. But I know the feeling of thinking everything is MS related and just the beginnings of something bigger.
Hope it gets better soon!