Fast heartbeat?!

Fast heartbeat?

I'm 22, a yr ago I had an ekg & everything was fine, I didn't experience abnormal heartbeat. 4-5 months ago I start getting rapid heartbeat, usually when I wake up from my sleep, I would feel it thumping & I get weak. I was at my new doctors office, they gave me an ekg & she said my heart was beating extremely fast (I was very relaxed). They checked my blood pressure 3 times, it was high & changes dramatically within minutes.. She prescribed me metotrolol 25mg, but I notice that I was actually experiencing rapid heartbeat more often & the thumping was stronger than before I started the medication, I really can almost hear it.. I'm either just sitting around doing completely nothing & it would suddenly just go for about 2minutes & just slow down & within minutes it would happen again.. I was on metotrolol for 3wks and I just stopped 2days ago because it felt like it made it worse. I will find another doctor to go to, but does anyone have an idea what is causing it?

3 weeks ago
I'm changing doctors because they're not really professional so I don't feel that I can trust them with my health. I am chinese & my doc is american chinese, yet her staffs aren't so I got a phone one time where they asked me to go by to pick up my 'blood test THING', which she really meant blood test report, also I did not understand anything she had said. So just to be safe, I rather try a different doctor. I've only seen her once so it should be fine. Thanks for the info!

Have you had a lot of caffine? When I drink a lot of caffine my heartbeats really fast for a few seconds and then goes away. Maybe the medicine you took had a lot of caffine in it.