I have had a headache on the right side of my head for a few days now.?

I have gotten this type of headache before and it was much more painful lasting a few days with pain around my right eye also. This time the pain is less severe and my eye does not hurt.I get these for a few days at a time maybe once or twice a year. I had a MRA scan 2 years ago which 2 doctors examined and the results were fine. I worry because my mom had a brain aneurysm. What kind of headache could this be? Does anyone else have them?