I have been having a pain in my right side for a while been to doctors a few times had antibiotics pain stil there had been for x-rays and ultrasound but results still negative for anything. do not know what to do next get a 3rd opinion?

Right side pain: Right sided chest pain: pneumonia, pleuisy, PE, chest wall pain, intercostal strain, gallbladder, kidney, cardiac. Right sided abdominal pain: appendix, colon, gallbladder, kidney, stomach, pancrease, psoas muscle, back. The right side pain can be a lot of things. Yes, I would seek another opinion if you are having persistent symptoms.