I agree. I had an epidural with my last child, and it was VERY painful. (Then she went into distress, and I had to have a c-section anyway, but that's beside the point.) After that, for about 2 years, I had the worst back pain of my life - right where the epidural went in. Doctors always said, "It can't be from the epidural. That can only cause headaches." Thankfully, that's one pain that stopped. Keep looking, though I know it's hard - there's so much they don't know.
Diagnosed: Fibromyalgia, possible Meniere's, elevated liver enzymes, skin grafting on back, arthritis, scoliosis, lumbar disc damage, sciatica, IBS, migraine headaches, tachycardia, skin cancer surgeries on face
Meds: Nortriptyline, Clonazepam, Darvocet as needed
Multivitamins, l-lysine, probiotics, magnesium, malic acid, calcium + vit. D, vit. C
Be yourself. Everyone else is already taken.