Earlier while at the gym, I got a pump in my left arm, forearm more specifically. I felt as if the blood flow was being suffocated. My left hand began to go numb, several seconds later I became light headed and had to sit down. I blacked out for about 10 seconds, then my vision came back. I was still very light headed and sickly feeling. After about 3 minutes I walked to the bathroom to put warm water on my face, it felt extremely cold. It was room temperature, but I felt like it was about 40° F. I became very pale, almost a greenish color. After about 5 minutes my color came back, my arm had stopped swelling. After about 10 minutes my body temperature came back. When I had gotten home, I took my blood pressure, it was 127 over 70. I am 16 years of age, and 210.4 lbs, 6 tall. Any answers, or advice?