I Am Suffering Pain In My Heart On And Off,kindly Help Me

Ok, long story short. I ve had just like a quick 3 second pain in my heart on and off for like a day now. Today in my 5th hour class, I had like a really fast beating heart, and pain. Following with like a prickly feeling all over, and a cold sweat. It was all over in like 2 minutes. Now there is just a hit of pain occasionally. I am 14 and not overweight . I m pretty sports active. Could this be a cause? Also my twin brother had the same thing earlier this afternoon, along with my mom. Does it sound like a virus or something! Please help! I am worried that we all had heart attacks or something!!