I need help

Br

My son refuses to burp anymore. I could try to burp him in every position known to man for half an hour at a time and I’ve tried gas drops. Nothing comes out. It’s been almost 30 hours since the last time he burped and I know he has a big one stuck in there because he will only stop screaming with a bottle in his mouth (I’ve tried the pacifier and he knows the difference now so it doesn’t work) or if he falls asleep which lasts for maybe ten minutes at most. I’m at a loss, I don’t know what to do anymore. He won’t let me sleep or eat and I’m so frustrated that nothing is working. Any advice is appreciated!