16 years old, losing hair?

[MHD]

I've posted here before but I'm still not sure if I'm balding or not. Nobody in my family is/was really bald, mother's father was partly bald (on front, not on top), my father is not bald, and father's father also has all his hair. I stress sometimes and I don't sleep long enough quite often. I also have dandruff, pretty severe I suppose. Other than that I don't know what's happening, maybe I have bad luck with genes after all :/.