I went to bed one night, and woke up with very red small non-itchy, spots all over my cheek and forehead. they arent raised, what could this be?

Urticaria: Urticaria is a possibility. It's a generalized term we use for hives. When we don't know the cause of the hives we call it "idiopathic urticaria". Since there are many causes of rashes speak with your physician. They would want to know if you'd eaten something commonly known to cause urticaria, such as shellfish, or peanuts. Or if you could be suffering from another common condition called rosacea.