What Causes Mild Headaches With Facial Pain In The Forehead And Eyes?

I have been experiencing very mild headaches for a couple weeks now. The pain is on the top, sides and front of my head around my eyes. Sometimes it lasts for a couple days and sometimes it's a couple hours. The mild pain does not affect what I'm doing but it is becoming annoying because it's still there. Is this something serious I need to worry about or is it cluster headaches or what? I'm curious because I've never had anything like this before and just want to figure out why this is happening now?