okay, for years now I've had this problem. Most of the time before I have to burp, I can feel the air rising and then I make this loud hip up sound. Then I burp, but most of the time I have no ideal that I'm going to burp and all of the sudden this loud noise comes out. what is it? I call it a pre burp but I have no clue. Everyone else hears it and it surprises them and kinda scares them, then they assume I have the hipups but it's not the hipups. It happens at least twice a day. Can anyone give me info on this? Thank you. This has nothing to do with what I do or don't eat before or after. I also taste nothing. It's just like some air comes rushing up and out in this loud noise.