I am almost 19.I have kind of a norwood 2, more hair thn norwood 2 hair line. Is it a male pattern baldness? Any ways I can stop it or slow the process?

Listen man! ALL normally-masculinized men have some regression of the hairline on the temple at age 19-20. Male pattern baldness is programmed and generally proceeds at a rate in direct proportion to how much chest hair you're naturally blessed with. If you do start losing beyond your temples, your physician can explain Rx's or you may decide to embrace what Nature gave you, get super-fit, and look great.