One Eye Bigger

My eye has been aching since yesterday morning. I looked in the mirror and my eye lid is red. It's so gross it looks like someone punched me in the eye. I was just sleeping. My theory is that a creepy bug crawled up in my eye and stung my poor delicate eye lid. I wonder for how long the pain will persist. Should I go to a Doctor? My parents tell me that it will go away by washing it everyday and not poking it. Why does this type of stuff happen to me? I will not cover it up with makeup either, I need to show the world my aching eye lid. Not so that they feel sorry for my eye lid, but so that they can be aware that it could happen to them.