Over the past year I have had frequent episodes of tachicardia & bubbling sensation in my heart area. It follows with extreme fatigue & asthma like symptoms for the next day or so sometimes weeks. My lung specialist has investigated via gastro specialist for gerd but came back normal. I m taking three types of preventers for the asthma symptoms which help a little but do not improve my overall unwell feeling. I suffer shortness of breath a lot while lying down & while sleeping. My symptoms were recently almost gone then I had a strange gurgling in my heart & cramping in middle of my breast bone . It s very frightening & I ve got not answers from any doctors