There was a period though, when my burping reduced or stopped for some time, it was when i was going through severe cough which lasted for 3,4 weeks. It went really bad, my throat started hurting so did my chest. But when i recovered from that , burping was back with a vengeance. The last 2 weeks of my cough were also when i was going through a trauma, started having difficulty in breathing, and noise in breathing at night. Cough stopped, but breathing difficulty continued, i couldn't take a deep breath, finally had my first panic attack.