Hi Kitty, I know it's scary when we find something unusual/unexpected on our bodies and we tend to think the worst, then find it's not anything to worry about. The only way to put your mind at rest is to speak to someone about it, your mum or an older sister maybe, or a trusted aunt or teacher? But eventually you should see your doctor to check it out. It's probably hormonal and will settle down in time, but get it checked anyway. Then you can relax and enjoy life. Always here to chat, and do let us know how you get on. Big hug, Amy x