feeling of bubbles popping?

for the last week and a half  have had these feelings in my chest/windpipe area. They feel like as what I can describe as "air" popping in my windpipe area sometimes they feel nearly at the top of my throat are sometimes further down. initially I thought it was palpatations as I do suffer from them espescially in extreme heat I also suffer from stress does anyone have any idea what it could be as Im going abroad in two weeks and need to know what this is many thanks in advance 

Hi sue I have this to I think it is either my hiatus hernia or cartledge in ribs although like you I have palpitations but this clicking popping noise feeling is different it's quite noticoble when full for me and I can do it by pushING out my chest hope this helps somewhat.

yes thank you my symptons seem identical to yours thank you for the reassurance