why am i this scared

im waking up terrified as if im dying i can swallow food and drink but im scared to eat im 30 why am i feeling like this is it anxiety because its driving me insane went to er to see if its worst news but they said im completely fine making a appointment to the stomach doctor to see if my barret esophagus got worse im scared idk what els to do is this the end or is my head just making excuses