Thanks for the suggestions. I guess it's time to go back to the doctor. I had been successfully managing these for several years, paying attention to triggers and hitting with excedrin at the first indication. A new and very stressful job this year has increased the frequency of the headaches, as well as making it more difficult to take a day off to recuperate.
Time to see what improvements there have been in treatment since I gave myself the last imitrex injection a few years back.