I've been having this air bubble type feeling in my throat/chest. It feels like when I try to swallow it I feel like I'm going to throw up. I don't understand what it is. I've had it for two days now. Sometimes it's in my throat and sometimes in my chest. I don't know what to do about it. or how to get rid of it. I've tried eating and drinking, also burping. It feels almost like a clog of some sorts.