When I had problems with my gallbladder, I felt a sharp pulsating pain coming from the right side of my body below the rib area. I had a stone stuck in the bile duct so whenever the bile duct tried to shoot out the bile and couldn't I would get the pulsating pain and then it would stop and then start again. Not sure what is going on with you. Wish I new more. Wish I could help. You probably need to get to a doctor to find out what may be going on there, as they can run a test to see if it's your gallbladder or not. Keep us informed.
Love,
Helen C.