My eye is randomly twitching?

my right lower eyelid randomly started twitching yesterday and this morning it still hasn't stopped. i've been looking up the possible causes and thinking maybe its vitamin deficiency because i haven't been eating well lately, or stress, i mean i don't feel stressed outright but i have been having anxious dreams so maybe subconsciously i am stressed. anyways, if i eat well today should the twitch just go away pretty quickly or does it hang around for a few days? what should i do about it?