Crunchy feeling after breast aug. Is it normal? (Photo)

My suregon just called to check up, super sweet guy but I was drowsy and didn't think to ask... If I do light streching like extend my arms out and put my hands together in front of my chest I get a crunchy crackling feeling. Even if I push down on the top of my breast. I read it could be air or something else that starts with a "c". I had surgery around 12 hours ago. Thanks! I have had absolutely no pain which is great but I'm just wondering what that crunchy sensation is! Thanks!