Why kind of heart beat was this?

I'm 23 with a long history of skipped beats and pounding beats. But today I was playing on my laptop wheb suddenly my heart beat really hard below my left breast then a short pause then a hard beat in the center of my chest and it repeated that pattern for around 8 seconds it was not fast or anything. It felt like the lower part of my heart would beat then pause then the upper part would beat then immediately the bottom would beat followed by another pause. It didn't make me dizzy or lose my breath or any pain it just scared me. All my family members have skipped heart beats and tachycardia and has never had any problems so that makes me feel a little better. I've had ekg blood test chest x-ray and CT scans but I'm told I'm in good shape and I told the doctor my heart skips and he said it's normal as long as it not affecting me physically such as passing out losing my breath when they occur. Am I ok? Is it just palpitations?