Hello, over the past 2 weeks or so I’ve been experiencing this weird vibrating/buzzing sensation from what seems to be my heart. It lasts a few seconds at most everytime it happens but seems to always throw me into a little panic attack. I had a major panic attack 2 days prior to when this started where I was having some extremely bad heart palpitations to the point where I almost called an ambulance. Long story short I went to the ER last week because I thought I was having a heart attack at work. They ran a bunch of tests and ended up discharging me with a 24hr holter monitor and saying it was most likely anxiety related. The ekg and blood tests came back fine while at the ER also. Keep in mind I’m a relatively healthy 28 year old with a history of minor high blood pressure that is controlled with medication. I also have a history of panic attacks and anxiety but havent had a flair up like this for about 3 years! Just looking to see if anyone has experienced this also?