A 686 is kind of large for concealed carry, anyway. IMHO. Anytime I carry one, snubbie or larger, it's for field use in a holster designed for shoulder carry or external hip/strong side carry. Anyway, I have had monster sciatica issues for decades and gun carrying IWB or OWB has never caused me a problem whether wheelgun or flat sided so you might want to rethink either your gun, your holster, or your carry position.

I use osteopaths and chiropractors for back adjustments, I get acupuncture, too, and I recommend them as long as you don't try to cure acne or the measles, as mentioned above.