Can someone Help Please?!?!?

My dad and his brother are both bald. But my grandpa had a full head of hair till like 50. Also most if not all of my mom's five brothers also have a full head of hair till today. But im still worried about my hair...like today in the shower i kinda combed my hair with my hand once and saw like three to six strands of hair. this occured each time i sifted my hand thru my hair. Am I going bald. and if i wanted to how can i tell if im seeing preliminary signs for balding. Thanks in advance.