i can only swallow water

Female, 20

Please help. I'm gonna get checked up tomorrow but I don't know what specialised doctor I should go to. I'm pretty sure I have GERD which worsen because I wasn't able to follow my healthy diet plan during the first few weeks of this year, and it's now difficult for me to swallow food; even oat meals which I thought would've been easier for me because of its consistency. I also have anxiety of aspiration so I now am scared of eating anything at all. I'm so scared that the food will block my airways, and I won't be able to breathe. What can I do, and which doctor should I go to?

Update: I was prescribed with Pantoprazole+domperidone that I am supposed to drink everyday for a week. My only concern is that it is a tablet and I have difficulty swallowing so taking the prescribed medicine might be hard for me.