Oh coltfire, I'm so sorry, yes, I've moved into other studies, and so I haven't been around. As someone else suggested, definitely look into low or no THC cannabis-- even the fan leaves from your grow would be excellent. I recently learned that dogs have twice as many thc receptors in their brains as humans, so can become extremely uncomfortable if given thc.
Other herbs to consider for pain are skullcap and passion flower. Chapparel also has some tumor fighting properties. There are more. Do your research. Try to find herbs that are native to your continent. I've discovered that for every herb in one region, there is another herb that is medicinally identical in another region. And of course, some herbs that don't grow wild in your area can be cultivated. American Skullcap is one example.
Capsaicin (the chemical that makes chilies hot) is recommended because of its anti inflammatory proprties. It also stimulates good blood flow to the tissues it needs to go to. Capsaicin also acts on the smooth micro muscles that line the blood vessels, allowing them to relax and contract as needed. This action makes chilies a good crisis herb for treating shock.
Feverfew is another pain relieving, anti inflammatory, good for general aches, pains, fevers, nausea.
I hope I was able to be of help. I am very sorry that you have to go through this.