See a specialist. Yes homeopathics may work, or it may be that more traditional medicine such as a steroid injection is called for. I have patients who undergo a steroid injection then fell more able to actively participate in physical therapy, so the combination did the trick.
Many methods. This depends on what's causing your upper back pain, but back pain often responds to physical therapy/stretches/exercises/yoga. Skilled bodywork such as massage therapy, chiropractic or osteopathic manipulation often helps. Acupuncture, homeopathy & frequency specific microcurrent can help. Stress reduction, magnesium & herbal medicines can also help. A holistic doc may help you assess what to try.
RICE. Rest, ice, compress/ massage, and stretch gently. Tylenol (acetaminophen) and Ibuprofen are not strong medicines.
Massage/relax. Heat and massage otc antiinflamatories.