I am not able to gain weight. Sometimes i loose my appetite and sometimes My diet is okay even i joined gym i gained 2 kgs got sick and now again not able to gain whenever qnd even when i joined when i increase my diet my stomach get upset i suffer from loosemotions or stomach pain and then m not able to eat properly Still i eat dahi everyday drink shake eat chapatis 3 times i eat paneer but idk if its a problem with my digestion, metabolism . I am 5’4 and 46kgs right now basically underweight and i am 18. There’s a relative she was skinny just like me but then she took some medicines or tests now even if she eats twice a day her she still gains weight like normal people My gaining stopped after i had typhoid two years back and it lasted for like a month or more I've never had any tests or consultation for this thing. I am so sick of this skinnyness i dont know if i need to see a general physician or gastroenterologist or who