Check with doc first but...
Headaches might be caused from back problems.
In the early 80's I had a roomate who was into healthfood, veegan & such, believed in total healing by clamping thier ankles into a gravity table, Now called inversion, company name teeter on tv all the time. I used to use it once a day. stange but effective. I wish I had 1 now! At 48 now, I am really looking to get the inversion style table.
Basicly, you stand up against, reach down & clamp ankles, lean back and the thing inverts and hangs you upside down. It does awesome things to bad disk, might as well say rebuild, & extra blood flow to head (after some getting used to) has a whole slew of positive benefits. Say good by to the chiropractor! Mine has never mentioned one, you never see one in the office, but when asked, he had one at home!!
My $.02, just a thought, but wouldn't attempt without doctor approval.