Why the hell am I so short?

2015-10-27T18:55:00Z

I am about to turn 13, and I am 4'11. All my friends are like one inch taller than me, even though they were my height last year. I don't know if this is genetic, (i'm indian) but its REALLY annoying, and can someone explain why??

?2015-10-27T18:54:32Z

uhhhh genetics...