I started to flow my stuff when I was about 10 years old. I’m 13 now and the amount of sperm that comes out hasn’t increased. Is there anything odd about this?

This sounds totally normal. Young men usually start ejaculating 2 years after they begin to develop pubic hair. The liquid that comes out is actually called semen and each ejaculation of semen contains about 100 million sperm.  The amount of semen doesn’t have anything to do with the amount or quality of a guy’s sperm. The amount of semen that your body makes usually stays about the same.  However, if you notice it has decreased, or you have any questions about your sexual function or fertility, you should make an appointment with your health care provider to discuss further.