Problem with acid reflux?

about once or a few times a day i have this really strange thing, I don't know if its heart burn or acid reflux because it doesn't burn. After i eat sometimes i feel i need to burp and so i try and vomit come into my throat but i quickly swallow it cause i feel it at the bottom of my throat and stop and swallow. it happens even when i bend down sometimes i vomit in my mouth a little its messed up!.....Anyone know what it is it does't burn and i never fully vomit. what will stop it its annoying and gross