I work for an eye doctor. It could be a build up waxey fluid or a stye. You might want to try hot compresses, if that does not relieve it somewhat make an app on Monday, they will get you right in with that. Please don't rub or scratch. It could be something called a chazlation. Going to a regular MD is a waste of time and money for they will only refer you to the ophthomologist anyway.