I've got what feels like abdominal popping, a pain in my lower spine and a burning sensation in my hip & lower rib cage - it's painful to eat/drink... i'm not sure what's brought this on?

Cólico biliar: It would be good if you will get studies, a biliary echocardiogram can reveal new data

Varied symptoms: These varied symptoms are most likely not interrelated. You'll have to see a physician who will take a thorough history and system review, perform a complete physical examination and order appropriate tests. I recommend that you consult a specialist in internal medicine. After the assessment, referral to a gastroenterologist may be recommended.