I started getting palpitations 2 months ago and 15 days before today my treatment with a cardiologist started. My heartbeat suddenly goes up nearly 115-120 bpm. He has done echo and ecg test but both are normal. So he prescribed me clonazepam and metoprolol succinate for 1 month. My fast heart beat is controlled but most of the time there is a vibrate type feeling in my stomach and this is of moderate frequency. I am too worried, what should i do. Please someone suggest any soloution. When fluttering starts i also start feeling like i have to intake too much of oxygen but there is no tightness in chest. My doctor said you are healthy as a normal person but this fluttering making me more nervous. Is this due to the medication and can this be cured. Plzzz help.