Pain
with the amount of research i have done over the years and my experience here, i have had a lot of experience with the gall bladder. you should mention it to your Dr. for sure. if it is truly your gallbladder it will only get worse over time, trust me. some attacks are worse than others, some are minutes and some will last hours. once you have the bad ones, you will never forget them, even when you dont have it anymore, you still remember it. ouch!
p.s. it is indeed a "side affect" from our surgery as it is an organ that is not used as much to break down bile once we have 85% of our stomachs removed.