Hi i am a 33 years old male was diagnosed with tachycardia supraventricularis in 01,but hade an ablation done in 06,and was ok until recently,i hade some fast heart beat was in ER 2 times and they just send me home with you are ok.But right now my puls is 110 reasting heart and when i get up walking it goes up to 145-155 i have stoped smoking about a month ago no cofein no alcohol and the heart rate was for 5 hors and going,feel like i am heaving migrena 3 days now .I wonder wat can this be?