This is something you need judge for yourself. If your hair was always like this than your fine right now. Regardless at 14 id question if its even possible to be going bald yet, and you cant do much about it even if you are.
At 14 I would put it out of my mind, and enjoy your youth. At 21 or 22 maybe check if its worse and see a doctor. By the time your 22 there will be safer better things to use so time is on your side. Dont worry about it.
