Overreacting Mom?

I first noticed this rash on Lily on Sunday, I thought it was nothing, now it spread to her other cheek. I called her doctor and she has an appointment tomorrow, but I did the worst thing you could do, look it up on the internet, now I'm so nervous. She hasn't had a fever that I could tell, and has no other symptoms or anything, but still, I'm nervous. Oh and by the way, the pictures don't do the rash justice, the flash washes out the color of the rash and make it look smaller than it actually is.