Male Baldness Info

I’m seventeen years old and for a year now I’ve noticed that I’ve lost a lot of hair, mainly at the front, my hairline is receding. In the morning when I wake up I can see hairs on my pillow.
I look around the internet for advice given to people in my situation and the same answer seems to be male pattern baldness. But no one in my family history, on both sides of my family, has a history of baldness. Both of my grandfathers died with full heads of hair and all twelve of my uncles have good hair into their 40′s and 50′s.
I’m under no stress in my life at the moment as well. I don’t know what’s wrong and I wouldn’t mind it happening if I were ten or twenty years older. I’ve asked people in my family and they all say that it’s my imagination but I can see the evidence clearly and the rate it’s falling out makes it seem I will have no hairline in the next couple of years .If anybody has any suggestions or theories I’d love to hear them. Thank you.

i am a 15 year old boy. (no one in my family suffers from male pattern baldness) my hair if thinning (all over the head), how can this happen, i do long school hours and am very stressed. What could cause this (about 10% thinner hair)