Lately I've been experiencing some heart related problems. I'm 21 years old, and stopped practicing sports for like 2 years ago, due to College and I also started working. I have a high blood pressure, yesterday o checked it and I had 15/8, and 2 months ago I had 14/9. My heart beat was 99, at rest. But what bothers me most is my irregular heart beat. It has a quite fast pace, but it sometimes stops for like 1 second, and then it occurs one big pump, and returns to it's pace. I've been more worried for like a week and a half, when one day I started feeling a bit dizzy, and my heart started pumping a bit hard. I was like that for 2 hours or so. What can this be?