I have headaches ociated with my eyes?

I've had daily headaches for 4 months now. It hurts mostly behind my eyes a bit above them and the back of my head. My sight seems fine except my right eye always feels like it has lint and I'm constantly rubbing it. I have problems breathing through my nose but when I press my forehead it doesn't hurt, so I don't think it's a sinus infection. What might I have?