Yeah, I'm 18 and I have a similar receding, maybe 10 % better, and I definitely suffer from male pattern baldness, so you should be very alert. But I don't know, that hair is amazingly thick, I'm no expert in recognizing male pattern baldness, but is it not worth a try to consider the idea that you have the combo mature hairline + stress ? I know a guy who actually became Norwood 2.3 because of stress and lack of iron and not male pattern baldness because everyone in his family has a full head of hair. Also, you look like one of those guys who can't grow a beard quickly, which indicates that you are less sensitive to DHT. However it's important that you don't trust my opinion. Let's assume that you do have male pattern baldness and you listen to me, you would lose hair because of delaying to start with treatment. So continue reading and go to a dermatologist