I have the same problems with chronic pain. It mostly affects my legs, and while I don't have kids yet, I work in an elementary school. So you could say I have about 60 kids. => My doctors have told me that depending on where your pain is, and your medical coverage, if any, that trying physical therapy might help. The therapist can recommend strengthening exercises for the affected areas that you can do at home without expensive tools/machinery. Exercise is supposed to help with chronic pain, they say. Also, make sure you know your limits and don't push yourself too hard.
OTC meds do nothing for me either, and I've taken more than the recommended dosage as well. I tend to have reactions to meds, so I don't like to take new scripts or the newer medicines either. One I tried that really helped me was Cymbalta. It's cross listed to help with general anxiety disorder, major depressive disorder, fibromyalgia, and chronic musculoskeletal pain. Since my doctors can't seem to figure out what's wrong with me, I really liked this med because it's prescribed for one of the things that might be wrong with me. And it worked really well for me. I started to feel like my old self again. The huge problem with Cymbalta is that it's a non-formulary drug, so even with my very good medical coverage, it's $90 for a one-month supply. Horrible. Probably one of the worst days of my life because I had found something that greatly helped with my chronic pain problems but there's no way I can afford that cost.
Good luck with your pain management! I hope some of this long post may have helped you. =>