Talk to Gastroenterologist on Underweight And Stomach Weight

I am 17 years old and my weight is stuck at 37 kg. Gaining even 1 kg feels impossible for me.My appetite is very small, and I cannot eat a large amount of food at one time. I am also quite picky with my food, but no matter what I try to eat to gain weight, nothing seems to work.Along with this, I have ongoing stomach issues. The triggers are not constant—there isn’t a specific food that always initiates my gastric issues. Instead, my symptoms fluctuate unexpectedly. Sometimes I get severe diarrhea, and other times I get severe constipation.Because my digestion is so unpredictable and my appetite is small, I really don't know how to safely gain weight….