Natural supplements won't hurt you. They can only help. They won't make chemotherapy or radiation therapy less effective. Instead they amplify the power of whatever cancer treatments you may be doing by attacking cancer in other ways, or supporting the health of the body and immune system. For example, research studies have shown that when you oxygenate cancer cells, radiation therapy is more effective at killing those cells. And beta glucan, when used in conjunction with some types of chemotherapy, produced marked improvement over chemotherapy alone.
Two possibilities to mention:
1. If your skin is tender to touch and burning is not affected by body movements and different positions, then it can be shingles (Herpes zoster virus reactivation in one of the spinal nerves). Nausea can be also from shingles. This causes burning pain going like a stripe from the spine to the front. Often (but not always) rash appears after some time. Neurologist would tell you, if there is any available painkiler for your situation.
2. Bulging or herniated disc or some other disorder in your thoracic spine (osteoporosis, arthritis..) could cause pinched spinal nerve. This type of pain would be affected by different body positions and would not be tender to the slight touch. Again, neurologist could say more.