I Had A Scare Today. I Was Working At My

I had a scare today. I was working at my desk and suddenly lost my vision. I saw bright light that "flickered" and moved. This lasted 30 - 40 mins and was in BOTH eyes! Then vision started to clear. When I was able to focus again, I immediately got an intense headache behind my eyes that lasted the rest of the day. I got an eye exam at lunch time and all is well there. I planned to call my Dr. but they had closed for the day by then. Tonight, had a short-term vision blurriness again (a couple of mins), then passed. Now headache is MUCH worse.