Hello. Exactly 23 weeks, I can't eat all the food I used to eat, I onl…

Hello. Exactly 23 weeks, I can't eat all the food I used to eat, I only eat selectively and once only I can eat this food, and then I won't be able to eat it again. It's like a toxic started but without vomiting. Is that normal? Or should I see a doctor? Although they are useless in our country.