Teenager struggles

Today in the morning I was shocked to see something that i haven't seen in my life ..... I was nervous I was thinking that i got some serious disease then I rush to my mother but she was not at home so i gone to ask to my elder brother he said that "it's normal pakki its a period " Then he said "go to your room i am going to buy some pads for you " Then I search on internet about that and i got to know that was normal period that everyone gets in their life....