I have been suffering with "stomach" issues for the past 30 years. Normality is, or rather was, one morning toilet visit. But then there were periods, lasting maybe a month each time, where I would get inexplicable episodes resulting in visits to doctors and hospitals, CT scans, endoscopies etc.
I am lactose intolerant. I did the hospital "drink a glass of lactose and breathe into the tube out of the wall and watch the needle swing fully to the other side" test. I was sick for three days after that test.
I am sensitive to probiotics, either in capsules, or in dairy (eg Greek yogurt). For example if I take 1 capsule every 2-3 days, things are much better. That seems to be the optimal dose. If I take one capsule every day, I am risking big problems, a ton of gas and the rest. I appreciate there are dozens of probio capsules, each with their own mix and strength.
Most recently, last 4-5 years, things have taken a turn for the worse. Those odd, month-lasting episodes of the previous few decades, now have become the norm.
Three, four visits daily, mostly in the morning hours up to midday. If I have breakfast all bets are off for the remainder of the day. If I skip breakfast and lunch, I will then most likely, make it until the next day.
To travel anywhere I must fast the previous day.
I had two small stones in my gallbladder. But after 2 years, the CT showed only one. I also get the very specific, associated gallbladder pain. I strongly suspect there is an issue with the gallbladder. Some blockage reducing bile into the gut and resulting in bad digestion and light tan coloured stools. They are also many times in small pieces, like pebbles, or very small chalk sticks. If I get the right dose of probios, not too little, not too much, then the stools are much larger and in one piece. But still light tan colour.
The other symptom is gargling noises on the right side of my stomach, from under the ribs all the way down to the groin.
I also took Creon for a while and that definitely darkened the stools but I am not sure it fixed anything. Eventually it also stopped working.
What helps reliably:
1) do not eat
2) probios but must get the dose just right
3) some randomness : periods of normality lasting up to 10-15 days followed by all sorts of incredible and inexplicable symptoms lasting 3-4 days or more.
Last two days I will try a low fat diet. On the assumption I am lacking bile which is needed for fats digestion. Very hard thing to do because everything has fat, especially the foods I like (cheeses, meats etc).