Really confused
For context, I am at BMI 23 and I have an unnatural, swollen belly (96 cm/37in waist circumference), that has been gradually increasing over the course of 1 year, at least. At first, I thought it was the culprits were polycystic ovaries and insulin resistance, but even with treatment for these, nothing helps.
Recently, I noticed I bloat from fermented foods (kefir), raw veggies (cucumbers and green salad), and even plain water on empty stomach. I have a clean diet for years, I don't eat sugar/chips/alcohol, I only drink decaff and only after breakfast, my meals are focused on protein and carbs.
What blood tests or analyses should I do to outline histamine intolerance or anything else that may cause this?