Hello, My name is Calvin. I am 30 years old. I am a waist 42 and weigh 300 lbs. I am 6 3 and african american. Diabetes and high blood pressure run in my family. I live in NY. This morning i ran up 2 flights of stairs rushing to catch the approaching train. After i made it, there was a tightness in my chest. There was also a cold feeling that spread from my chest to my head making feel very light headed. Somehow it was like my body really needed to sit down. My symptom of lightheadedness settled down after i stopped heavily breathing. This was about 20 minutes. I was standing but was bent over and leaning on a rail with my head down on my elbow. I felt better. The tightness in my chest was still there but after the initial 20 minutes but i got a seat after and the tightness went away. I always run for the train and yes i do pant from rushing to catch the train but the other symptoms have never occurred. Should i be worried? Any advise would help.