Do I have Gyno??? please help me..?

I have puffy , and I have triangular shaped man , although shaped and they sound like gyno. Do I actually have it? I don't have the hard things under the like the others say. No trace of gyno in my family. I have am 6'2 225, and i'm 15 almost 16. I need to know,because i'm very self conscious about it and i don't ever take off my shirt because i'm too embared.