In 2016 I started experiencing rapid heartbeat (palpitations) I haven?t been diagnosed with it though. It happens spontaneously and it?s not daily or regular. Last year it got worse and more frequent. I?d be experiencing a fast heartbeat for 30 mins - 120 mins sometimes, once it starts i?d be feeling my heart pounding on my chest, weakness and shortness of breath. I have this heart rate app and during the palpitations, it reads above 100-121 bpm. Last year I was placed on bisoprolol in December and it had taken care of the palpitations, but I started experiencing tightness of the chest and tightness in my throat too, I still experience it till now. My history is this: I was undergoing treatment for tension headaches and was on tryptizol and propranolol before. I discontinued the propranolol when I started bisoprolol and i?m still on trypitizol. Please help me.