so, for the past couple of years ive had a "problem" that pops up maybe once a month (ie. not enough for me to even remember the last time it happened) where my heart just starts beating really fast for a short period of time. It happened today while working out and i just happened to be wearing my hr monitor. the hr monitor spiked to 250 (its limit) and then went down to 240, 230, 245ish and then hovered around there while my heart was beating like crazy. this went on for about 20-30 seconds until i could finally calm down my heart. Now this heart rate monitor is pretty accurate and ive never had problems with it. Ive never bothered checking into this problem with my heart since people just tell me its heart murmors which apparently just happen to some people. Since it rarely happens its never been a priority. Im going to make an apointment with my doctor this week but i just want to know if my heart could actually have hit 250bpm+ and what the problem might be. I know my heart rate speeds up like crazy because its almost impossible for me to manually count it and it feels alot faster that 170-190bpm.