Hi...Welcome to HCM
I read your queries and it seems that your food consumption and bowel movements gets altered due to different food stuffs in the place you had worked.
Its partly due to undigested food stuffs lacking in dietary fibers that makes bowel movements difficult.
Altered bowel movements can also suggests Irritable bowel syndrome
Its good to consult an Gatroentrologist who could help you with endoscopic / colonoscopic studies to help you out of having major issue wit consumption of food and bowel movements.
Avoiding dairy/gluten/soy free diet is also good in improving bowel movements.
free and I wish you a speedy recovery.
Hope this information is useful for you.