Hi Norm
I took Digestive Advantage probiotics for a couple months this summer to get some healthy critters in my gut. They have a few versions/formulas. The one I chose was the Intensive Bowel Support. (I think they're cultured on milk, but that's not something I'm willing to make myself insane over.) The product generally got good reviews. For those with IBS issues, esp of the "loose" variety, the product might be something to consider. The price is reasonable, and it doesn't require refrigeration.
If whatever you're taking the antibiotics for has caused inflammation, then the test numbers (CRP, sed rate) would reflect that. That doesn't discount how you feel. Your system is re-processing and removing a lot of toxic fat. Eat more greens. Antioxidants. Can't hurt, right?
You might also look at some of the major arthritis triggers (according to a paper at PCRM--Foods and Arthritis): dairy products, corn, meats, wheat/oats/rye, eggs, citrus, potatoes, tomatoes, nuts, coffee.
I wonder if soy should be on that list.
The pain-safe foods listed:
Brown rice
Cooked or dried fruits--cherries, cranberries, pears, prunes (but not citrus, bananas, peaches or tomatoes)
Cooked green, yellow, and orange vegs--artichokes, asparagus, broccoli, chard, collards, lettuce, spinach, string beans, summer or winter squash, sweet potatoes, tapioca, and taro (poi)
Water--plain or carbonated. Other beverages, even herbal teas, can be triggers
Condiments--modest amounts of salt, maple syrup, and vanilla extract are usually well-tolerated
Just food for thought. You can compare those things to what you eat and consider if any might be contributing factors for inflammation.
My husband just called from the doctor's office to tell me they gave him a shot, and they're running a food allergy test. He's had an ugly, itchy rash all over his body for a couple weeks now. We had connected it to a prescription med (NSAID, I think) he was given for arthritis pain. He was hesitant about stopping the drug when the rash first came. (He really wants to believe there's a pill to fix everything.) The rash was isolated to his neck then, but eventually took over his whole body. Eventually, the rash convinced him to quit the drug.

He always has bad reaction to NSAIDs. I told him not to take that drug. He doesn't listen to me...because I don't tell him what he wants to hear, I guess.

He eats a lot of healthier foods now, but he also still eats a lot of crap. I keep trying to lure him away from the dark side. It would be so much easier for us (me) if he'd just choose to leave it behind. If that allergy test comes back that he's allergic to corn, he'll be sad. He loves corn. If it comes back he's allergic to shrimp and seafood or chicken, he'll probably toss himself off a cliff.
Have a great day, Norm!