Headaches?

I've been having headaches daily for a while now. They come and go and some are worse than others, but almost everyday or every other day I'm experiencing some kind of headache or migraine. Recently, I've had one for about three days with minimal relief with excedrin. Anyone else have this problem? I used to think that it was my ADHD medication, but I haven't taken it in a while due to insomnia and the headaches. I've brought it up to my doctor and he says to change my diet, exercise, and get sleep at night. I tried all, and none have helped. Is anyone else maybe on prescription medicine to help headaches/migraines? Any advice on how to relieve it?