Your symptoms are the same as mine. Also went to emergency for the great pain, they prescribed me a pain reliever, in our country is labeled "Buscapina Compuesta", it was passed on through a venoclisis. It worked the pain dissapear in less than an hour. They recommended to eat light food, withoug grease. Also an ultrasound was taken that revealed that I have gall bladder stones, only that they were to small to be operated. Anyway after (in the last two years) that I had experienced reflux and a couple of intense pains. For the reflux the Doctor prescribed "Ranitidina" (Santac), it works, Anyhow another ultrasound was taken and the gall bladder stones are still there. My internist told me to go to the surgeon, for a second opinion, but he considered that I should operate the gall bladder stones because in the long run it may become a cancer. I have to go to see him in the next week My advice go to see your doctor he is the only one that gan diagnose your case. Good luck, hope everything goes fine with your health.