I Have Had No Injury At All, But I Woke

I have had no injury at all, but I woke up this morning with bruises on either side of my head right above my temples. And they may be swollen just a little. I also have a slight headache. Also, my head hurts to the touch, right behind my right ear. It might be swollen a little bit as well. I should have prefaced this by saying that last night something bit me right below my left eye and right above my cheekbone. After it swelled for 30 minutes or so, like a mosquito bite affects me, it slowly went away. So I figured it was just a mosquito bite. But then I woke up this morning with what I just described to you. Do you think the bite has anything to do with the bruises and sore spots on either side of my head? And if not, what in the world could this be? Makes no sense to me. Crazy.