What Causes Pressure In Between The Eyes Radiating To The Top Of Head?

I have been having pressure in my head right in between my eyes that extends to about the middle of the top of my head. It is not constant and feels more like a tightening in that area for a few seconds and then it passes. I thought it was sinus but it has been going on abut two weeks and now I am having dizzy spells. I also have been having some pretty bad pain in my right ovary and am not sure if these two things could be connected or not. I am just trying to figure out what this could be and how worried I should be or if I should see a doctor or what