Hello Welcome in H.C.M. I read your query regarding feeling of tightness in chest and throat and heart is pounding really hard, you are in stress also. All these are for a very short time and then every thing became O.K.. According to your symptoms it appears to be related with heart rather than throat. These are basically symptoms are of cardiac ischemia or angina. It will be worthwhile to consult a cardiologist and do complete examination and relevent investigations to find out the basic cause and than accordingly plan for treatment. As for as throat is concern these symtomps may be put in differential diagnosis with Angioneurotic oedema. but same may be easily ruled out as your discomfort was of very short duration while angioneurotic oedema remains for few hours. I hope above explanation answers your query. Regards.