Could Frequent Heartburn, Swollen Stomach And Throat, Acid Reflux With Vomiting, Headache And Deep Cough Be GERD?

I think I have GERD. I frequently have heartburn and the upper portion of my stomach swells with everything I eat except raw steak with vinegar. The past few days I had terrible acid reflux, swollen throat, and a bloating gas. Everything I ate resulted in me burping up vomit and burning my throat in process. Now my heart burn is gone thanks to ranitidine 150mg, but I woke with a terrible sore throat and highly viscous green mucus in my lungs. I feel extremely weak, shaky, dizzy, light-headed, with migraine-like headaches. I have a deep cough that hurts the middle to lower part of my chest, and of course my throat. It almost feels like the flu. What do you think?