Hi. I'm a 24 year old female. I have been having unexplained fast and fluttering heart rate since I was about 13, it seems to come in episodes. For this whole week so far, I have having my heart rate speed up for no reason, and I have been waking up off and on from my sleep with my heart fluttering. I have had, I don't know how many EKG's. Doctors have agreed that my heart rate tends to be faster then it should, but can't ever seem to come up with an explanation. My fast heart rate is very troubling to me, it scares me, it makes me feel fatigued and I can't really exercise because it makes it worse. Most of the time when it starts beating fast, it's hard to get it to slow down. It really freaks me out. Doctors have said that when I breathe in normally my heart speeds up, and they told me that, that was a little unusual, but could.t explain why. My dad had heat disease, and heart attacks,etc. And my mom have something wrong with hers as well, but I forget the name of it, but her heart sped up alot and would flutter as well, and what the doctors did was burn off an extra unneeded "wire". Could I have the same problem? What could this be? Please help.