I woke up this morning, put my contacts in, and then looked at my face in the mirror. There is some reddish purplish bruising on one of my eyelids. It didn't hurt at all when I was putting in my contacts--like I said, I didn't even notice it until I looked closely in the mirror. It doesn't hurt. I don't wear eye makeup, and I haven't hit my eye or anything like that recently. Could I have done something in my sleep? Will this go away?