Past few months, I felt my heartbeat rate to be a bit weird. sometimes when I was about to sleep, I felt my heartbeat was very fast, until I felt abit difficult to breathe, and I can hear my own heartbeat which is very fast and loud. But this do not happen everyday, it happen constantly in four or five days gap. For your information, I am currently 20 years old, student.
Recently I've been feeling my heart beat faster than normal -- like I've just run a marathon, but all I've done is stepped out of bed and stretched! And whenever I eat, I lose breath and my heart beats faster. I'm 17 1/2 and I'm the right weight for my height, so I don't really know what's going on...can someone help me out here?