When i wash my hair i see little hairs that fall out?

it isnt a lot of hair but like 6 small strands of hair. Is that normal?
Also someone told me washing your hair with soap makes it stronger, only problem is i want to know if it makes ur hair fall out?

im quite worried about hair loss, my dad and grandad, none have gone bald, but 2 of my uncles have slight baldness, they are in their early 50s, and are the youngest of the men in the family. Am i likely to be going bald as early as 17?