Widows peak, why is it there since I was 13?

I might have even been younger than that I just remember 7th grade biology we were learning about genetic traits such as widows peaks and when I pulled my hair back the whole class noticed my pronounced peak. This was hidden until college as I always had long hair until it started to get real bad. Now that I think about it middle school or possibly earlier seems very rare for balding especially with no family history. Should I get checked out?

The Widows peak is a remnant of the juvenile hairline. Imagine the tip of the widows peak as the point at which the juvenile hairline was. As it recedes, it leaves the widows peak behind. You never see a widows peak in a 5 year-old, yet as children age (I studied over 1000 children from 5-18 years old) these widows peaks appear.  In women, more than half of them have a widows peak which says that their hairlines moved up by a amount equal to the length of the widows peak.  See my article below which has good illustrations in it.

https://newhair.com//pdf/2015/phenotype-article-published.pdf