“Normal” is a subjective term. And not a terribly useful one in this context.

Long ago, the word “pickle” was widely understood to mean any food that had been preserved by using that method. It wasn’t specific to cucumbers. But over the generations, it became synonymous with pickled cucumbers.

If you were experiencing a migraine, you would probably be too sensitive to light to post anything from a screen. It isn’t always the case, but light sensitivity is a very common symptom. You might also see “auras” around objects. The pain is generally much worse than a regular headache too.