If it is in your back, you could also have a kidney
stone. I have had kidney stones
, my gall bladder out, and cysts on my ovaries. The pains are similar, but very different. Your gall pains hurt in the middle of your chest, towards the right side, (and yes your gall bladder is on your right side, I have scars to prove this!) Kidney stones and cyst pains are similar, but stones are much more painful. Anyways, I hope this answers your questions, but really, go and see your Dr.