Scared of Lung cancer please help

Im alnkst 18 and im terrified of getting lung cancer. I have asthma and have breathed second hand smoke but never smoked. Its hard to breath lately. When i cry or blow my nose theres streaks of black in clear mucous , like charcoal or eyeliner colored. Is this lung cancer.

I am sure it will be nothing to worry about but it is clearly causing you a great deal of stress.  Book in with your GP who can put your mind at rest or arrange for further tests.

Dani, you need to go see a doctor.  None of us can diagnose an illness...

Dear Dani, this may be any lung disease other than cancer. Please see your doctor in order to start the exact diagnostics.