One more thing, people with removed gallbladder will sometimes develop malabsorption to fat soluable vitamins including A D E and K, since bile won't be concentrated enough to digest fat, if you don't notice an improvement in less than a week, you should buy the sublingual vitamin D, you chew it and place it under your tongue and it's absorbed directly to your blood stream, also consider buying a sunshine lamp with UVB rays in its spectrum, put it on your desk at work to get pure vitamin D direct to your blood stream.
One thing you should know is that all types of windows filter the UVB light responsible for Vitamin D synthesis even in summer. Also, for latitudes more than 37deg north and less than 42deg, the sun don't give enough UVB for vitamin D synthesis from beginning of Nov to late Feb, even with direct exposure jn a sunny day, so, supplements are your only way to get Vitamin D.
If you're over weight or obese it's even worse, since the adipose cells demand vitamin D and take it from your blood stream faster leaving you with much lower levels.
It is obvious from your description that you don't get enough vitamin D at all, that can cause calcium malabsorption and consequently liver and gallbladder disfunction + problems in thyroid hormone regulation + fatigue + heartburn + indigestion.
Take vitamin D supplement 8000IU every day for one month and then keep it low to 2000IU during winter and 600IU during summer every day. You should notice a big difference in less than a week. Always take it in the day time because our body is programmed to take it from the sun, after you take the supplement drink a cup of milk 30 mins after because your body will start demanding calcium.
After the first month, try to take these three together Vitamin D + Vitamin K2 + Calcium, they call them the winning combo, you can search more about them online.
I generally eat healthy. Fruit for breakfast, small lunch (soup or salad or sandwich) And for dinner, mostly chicken vegtable and a starch. I have cut most red meat out of my diet because it seems to flair up attacks and discomforts.
I live in upstate NY and during the winter months, I am not in the sunshine much at all. My office at work has no windows, so during the weekday I am not so lucky to even know if the sun id shining! My job can be stressful at times, but I only work 10 months and have the summers off. Now that I think about it, I don't usually have many problems during the summer. Ocassionally, I am uncomfortable during the summer, but not usually any severe attacks.
I am in the process of changing to a different GI practice in hopes that they explore more options of treatment.
Most doctors are programmed, when it comes to a complex issue that needs real investigation to correct for, they fail because most of them are not pioneers in their specialty, they just memorize standard procedures and apply them.
I can help you identify the cause but I need more info about your daily dietary and routine work habits. I need to know the latitude of the area you live, and how much sunshine you get on average every day.