If i do not during the climax of masturbation, but then experience a refractory period is that norm?

I am a 13-year-old MALE, but i am WAY to embarred to ask my dad this question. I masturbate almost every day and during the most pleasurable period, I don't ! Afterwards, I try to keep masturbating, but it hurts. I looked this up and it is called the "refractory period." It says that this moment happens after a male has an . That's just the thing. I don't have an ! Can someone explain to me why?