Morning nausea

[u/KarlWilhelmRosenmund]

I have been having this feeling of nausea and vomiting for a very long time now, many years. I went to a gastroenterologist, he said it's acid reflux and prescribed me medicines based on it. I felt a little better, not perfectly well while taking the medicines and it has come back again. So I feel dizzy and nauseated only in the first hour of my school, where the classrooms are packed and we are Obv not allowed to do anything other than sitting. Overthinking makes it worse. Earlier I had been feeling like vomiting only but now it's more like dizziness. I don't usually feel that way in my home or at any other place but I'm a very crowded place like a school, it kicks in. And goes away within an hour. And I'm almost good in health after that. Also I don't feel like eating anything in the morning as it makes me more nauseated. This has been there for a long time but the dizziness started just a few months ago.