Keep a food journal and this will help you know if any other foods are affecting you. I'm sure they told you foods to avoid with diverticulosis. Fibro isn't an inflammatory illness so this is caused by something different. We do have great forums on HealingWell where you can get info on digestive problems. That could help you too.
We have several members with Sjogren's Syndrome. They have very cold hands, dry eyes, etc. you might look into that. We have a Sjogren's forum on HealingWell also.
You could wash your veggies with warm water. That sure wouldn't hurt them. After all, they grew in the sun.
Sherrine