I've had a pair full headache on left side since last saturday with left eyelid twitching.yesterday my thumb and pointer finger muscles pulled them in?

Cut To The Chase: If you took simple measures to get rid of the headache, like Tylenol (acetaminophen) and/or Motrin, resting, avoiding stress and bright lights-- and you still have it, you'd best see a doctor. Especially if you've never had anything like this before, it came on suddenly, you've had a recent infection or head injury, but whatever, it's time to see someone about this headache.