I'm sorry for your troubles. A constant headache is a major quality-of-life issue.
I hope it goes away soon.
I was on Copaxone for only about 6 months, so my experience is very limited. The only side effects I ever had were injection site reactions, but even that
From the beginning, my site reactions were really bad, much worse than normal even for Copaxone
, according to my doctor. And unfortunately the site reactions just got steadily worse, larger and more dramatic with each shot. So I had to get back off of Copaxone before any of the weirder reactions had a chance to occur.
Later my neurologist told me that I'm one of those people who really can't take Copaxone.
Anyway, I never got the headache you have, fortunately, or the infamous chest pain for that matter, the only side effect I'd been worried about.