Hi, I'm a 27 year old female and for the past 2 years have had on and off pain in my lower right side right under the ribcage. At the age 18, I had a gall stone pass right through me and then up until the last two years, I didn't have any reoccurance with the stones. I have had 2 ultrasounds done and not one of them showed gallstones or anything in the gallbladder. My doctor said he thinks it could be the functioning of the gallbladder, or lack thereof. It's a sharp throbbing pain that comes and goes either before eating, during, or after, sometimes makes me nausious, and I sometimes get this gurgling feeling in that same area when it hurts. Maybe it's an ulcer? Anyway, my doctor is scheduling an upper endoscopy for me later this next week to find out what it could be. I also have lower back pain, just soreness and some fatigue. Any other ideas or does this sound like it could really be my gall bladder? Doc says if it is, he will want to remove it immediately...Also, my mother and her mother had theirs out at a very early age...How possible is it to be hereditary? Thanks in advance for any info and advice!