I would look seriously into fish oils/cod liver oil, in addition to what you are already doing. Don't take any of my advice without asking a competent health care practitioner because I am not your doctor and I'm just sharing info with you. It's up to you to do the due diligence of finding out if this stuff is safe for you to take considering your total health history. Now that that's out of the way:
I've been seeing excellent results with patients taking fish oils or cod liver oil. The research is out there for the taking (see
www.omega-research.com) so I won't waste time with it, but the bottom line is that good quality fish oils are powerful anti-inflammatories that work by shifting the bioechemical inflammatory cascades in your body toward anti-inflammation without blocking enzymes or doing things like a medication would (that have harmful side effects). I had a patient cut daily spinal pain resulting from 3 failed low back surgeries in half by taking about 2-3 teaspoons of fish oils every day (within 2 weeks he noticed this difference). Carlson's makes a decent product, but Nordic Naturals is the best, in my opinion, and I have researched the heck out of this.
I also find herbal support to be very effective. I use a product called Boswellia Complex with patients, which is essentially a traditional Ayurvedic formula using the best herbs modern science can find. It contains boswellia, celery seed, turmeric and one other thing I can't think of off the top of my head. I deal exclusively with an Australian company called MediHerb for herbs with patients. Sold only through doctors (no, I won't sell any to you) and their quality is unsurpassed. Very good for inflammation, especially in joints, and safe for long term usage (again, check with one of your own health care practitioners).