Hello and thank you for using HCM.I carefully read your question and I understand your concern. I will try to explain you something and give you my opinion. You should know that this racing heart has to do with a rhythm issue. There are some electrical impulses that generates in parts of the heart different from normal sinus rhythm.They cause premature heart contaction or chaotic rhythm that s not a normal one. It might be what we call extra beats or arythmia like supra ventricular tachycardia, atrial fibrillation ect. The causes of this rhythm issues might be different like simple emotional stress, coffee or alcohol consumption or pathologys like anemia, hyperthyroidism ,electrolyte imbalances or cardiac pathologys. In this situation you might experience palpitation, strong beating, heart racing, dizziness, difficulties in breathing deeply. So ,if I was your treating doctor I will recommend some examination like an electrocardiogram, a cardiac echo, a full blood analyze to exclude anemia ,hyperthyroidism , a holter rhythm monitoring to evaluate your rhythm tendency. Only after this we can better understand what we are dealling whith and if it is necessary to treat it. Hope I was helpful.Wish you good health. Best regards, Dr.Ervina.