I feel for you! Headaches are one of my major pcs issues that I have dealt with for the last 9 months. I am on an rx called voltaren, which is an anti-inflammatory, which does give me a little relief, but that varies from day to day. Because I have major sinus issues, my headaches are daily, but when they are kicked into high gear, they become very similar to migraine with the nausea, light sensitivity, etc. What helps me most in these situations is laying down in a dark, quiet room, minimizing stress (easier said than done), etc.

Hope things improve for you