I had gallstones and my gall blader removed a while ago. The pain was ridiculous! All I could do was moan like a crazy person, grab my stomach as hard as I could and push on it. That was my attempt to help the pain. It was a sharp ache that came and went. I couldn't drive, so I had someone take me to the ER at 4am. I just knew something was not right. I couldn't imagine going through the whole night with such pain. That kind of pain is not normal.
I think they determined I had gallstones from an ultrasound, I don't remember if they could tell anything from bloodwork. They saw the stones and then decided they needed to remove my gall bladder. To manage the pain, they gave me morphine. It seemed rather simple to take out the gall bladder and then you don't have any more symptoms. I hope your doctors help you soon and figure out what is going on!