Welcome to HCM
We understand your concerns
I went through your descriptions. I suggest you not to worry too much. Medical science is so advanced today. But not so advanced to explain every internal feelings. The bubbles you are pointing at may be explained by medical science. If you go to a physician with this, he may check your heart and lung area with his stethoscope, listen to the heart sounds
, pathologically check for any abnormalities and sometimes ask for EKG and so on. If nothing found you are fit.
These are internal bodily emotions (not mental emotions) which come and go whenever body faces with some difficulties beyond medical explanations. For example, we feel pulsations in so many places, eye lids twitching without any cause etc.
Please do not give it priority. Concentrate on your career and life.