Eowyn,
What kinds of things trigger/triggered your headaches without meds? Is there a way to work around those triggers?
Hope you start feeling some relief from the rebound headaches soon.
The headaches are miserable, I completely understand and wish I had better advice
Ice packs have been a help for me, and you seem to see some relief as well.
I have also learned that making sure my neck is supported when I'm sitting around is key. Too much stress and strain on my neck, really makes my head go crazy a few hours later.
Know you aren't suffering alone.... wishing you some relief!