my wife is 31 years old. She s about 154 cm tall. She s generally in good health. she s 8 months pregnant. we ve gone in for pre-natal checkups and baby is doing well. My wife is thai and eats a fruit called durian. she says the fruit has made her feel hot inside. And now she continuously burps. It also sounds as if she has some acid coming up her esophogus causing irritation. Some of the burps are gentle, common type burps. But a few seem more forceful, as if she s about to gag. Then the burp released and continues.