How To Control Extreme Emotions Causing Anger And Raise In Heart Rate?

I've always been easy agrivated. If im doing something and someone intervenes on me doing what i was doing i get very angry. My heart races to the point to where i can feel it pounding in my chest. I get really hot. It happends all of the sudden, i dont even realize it sometimes. That lasts for about 15mins, if im by myself. If the person is still in the room it lasts much longer. Lately ive even become emotional over little things. I try then to talk about it but i cant explain. So then i get in an argument with that person because i cant explain and i get angry because i cant get them understand. I get angry to where im yelling, crying, shaking and my chest is pounding. When i calm down about 30 mins later, I can go on throughout my day like nothing ever happened. This isnt me, ive always been a naturally stressed out person but ive never been had these many emotions impact me so hard. My "outbursts" are happening more frequently. Help? Before i lose my love.