Yesterday, I went to the dr and had a scan of my gallbladder. They injected me with something through an IV. They waited 5 minutes and did an unltrasound on my gallbladder and again at 15 minutes. Today I have had watery diarrhea and the last time I went to the bathroom it felt like something contracted in the spot where she tested my gallbladder. It was painful. I have not felt well since then. My question is : is the watery diarrhea from the stuff I was injected with and why the shape pain? Do I need to go to the ER? Should I be having small spasms in my stomach?

You should have been told about the risks of the dye they injected you with, before the procedure was done. If you are experiencing any of the side effects they discussed with you, call the clinic that did the procedure, or call your doctor. They should have given you a sheet with a number to call if you have an adverse reaction to the dye.