I Am Unable To Burp. When I Try To Burp

I am unable to burp. When I try to burp I end up vomiting. I have a pain on both sides of my head and if I try to open my eyes in with light it worsens the pain. I try to sit or stand pain on one side because more severe. I can literally feel the burp in my chest trying to come up but cannot escape from my th part causing a pain in my chest like someone is sitting on me. No discomfort in my stomach as if I have gas....only time I feel this is when I drink or eat Nd I cannot burp