Up until literally 2 weeks ago I was walking 3-4 miles a day briskly and my heart rate would get up to about 130. Starting last week, I notice my heart would start pounding even if I got up and walked across the room to get a drink of water. I checked my pulse and it's 115-125 bpm!
Now for the past several days I've been getting episodes of racing heart and palpitations, even when trying to rest. My heart feels like it's thudding out of my chest! I made an appointment to see my primary care physician tomorrow, but I'm trying to figure out what this could be. I haven't been able to sleep well in two nights because as soon as I start to fall asleep my heart starts racing fast and wakes me up.
I'm 41, overweight, and have slightly elevated blood pressure so I take 25 mg metoprolol a day (since last fall).