I have pain on my right side towards my back what can it be

It could be GAS. YOUR APPENDIX IS ON THE RIGHT SIDE,YOU MENTION THE PAIN IS TOWARD THE BACK WHICH COULD BE GAS, RUB WERE THE PAIN IS IF YOU START BELCHING/PASSING GAS THAT COULD BE A GAS POCKET. Do YOU HAVE bowel movements everyday? It also be constipation take a enema or colonic.:confused: always check with your health profession.