i too have herniated discs in my neck - c5 & c6 - along with arthritis in my spine. i don't get headaches, but do get extreme pain and numbness down into my arms/hands. i have had several bad episodes over the past few (6)years.
i opted for the physical therapy route, and never took off from riding (for my mental health).
i haven't had pt for a year and a half now, just kept up the exercises and keep moving. if i slow down, i set up like concrete. i listen to my body and can tell when that old feeling is creeping in and beef up exercise, stretching, and try to de-stress. ice is my friend, and occasionally ibuprofen (800mg). a vacation helps, too!
it takes time, but i think that it beats surgery.

best luck, whatever route you choose.

-lj