Talk to Gastroenterologist on Gastroentrology

For a few weeks now, I have problems with my digestive system. I visited a doctor who prescribed Iberogast (organic drops) for a week, assuming it as an infection. I used it for a week but the problem doesn't go away. I feel everything I eat, sticks on my throat. So it's a more up digestive system. Can it be thyroid dysfunction? If so, what food should use to normalize the thyroid level? Thanks and Jazak Allah.