Oxalates

I have had a lot of muscle and joint pain,something like fibromyalgia. My research points to the foods in the oxalete group. I always though these were healthy foods,not for me. Like nuts,fruit,berries,spinach,potatoes,coffee,tea,vitamin C, google it. Anyone else have any experience with this ? Lots of information on the net . So far so good. Vitamin B6 and 12 are also recommended.