It is about the age when they appear from nowhere. I am afraid to say it is a part of your teenage years and is due to what is going on in your body at that time. Like everyone else in my teenage years they kept appearing, and I just covered them with a fringe, as they were mostly on my forehead. Then they suddenly were no more and never came back. If you google the problem there is plenty of advice out there, but may be something you just have to put up with for a while.
Possibly puberty, sasa. Just keep the skin clean, and not too oily. Part of life but should go away in time. Don't squeeze as you may get scarring. Good luck !