I ve been having chest pains that are very uncomfortable. I also get severe headaches that last a few minutes then go away. I have pains in my arm and leg and it feels like im being stabbed with a knife. These symptoms have been going on for a few months now. And i ve also noticed a very small light black dot on my breast near the nipple. Im only 14 years old and im worried this could be something serious. Also a few months ago i was having difficulty urinating.... it was sometimes painful... and it smelt bad. It went away though.