Hey Alexander, it is not unheard of for male pattern baldness to start at 15 so it's cool that you're on top of it and it's good that you're checking it regularly. I wish I had been so attentive rather than spending a year in denial while I sailed from NW2 to 3. The good news is that you're fine at the moment, your hair looks amazing! It's does not look like it's going downhill at all. I think most of us just take regular photos and assess them ourselves, or ask friends to do that- this could be a good solution for you. I'm guessing you have a strong family history of it so you are very concerned about it beginning, I was too. For now you are fine though so relax and try to put it out of your mind- don't let it ruin your teenage years. They are precious and when you look back at this time you will regret spending so much time worrying about a problem that you don't yet have. Go out there and get laid! Know that when balding does start you can begin taking Propecia and prevent it getting worse for many years. The key is to catch it early before it gets too bad- and I'm sure you are aware of this and you will. If it helps make an appointment with a dermatologist who specialises in hair loss so you can get a professional opinion as to whether you are losing your hair, but do keep an eye on your photos yourself though too. Also watch for any increase in the number of hairs that come out when you comb it and when washing your hair