I can't burp. i feel like i have gas stuck in my chest and it can't come out. like something is blocking from the ability to let out gas or air. i had a coke today to help but it didn't and now i'm competed bloated. please help ?

Complicated problem: A physician will need to consider more information before providing advise: such as frequency of symptoms, onset, associated nasea/diarrhea/constipation as well as other non-gut related symptoms, medications and past medical history. You might consider a virtual consult or discussion with your primary doctor. The sensation of gas and bloating can be concerning.