well i am 17 years old... i have been dipping and smoking for a year now.. my parents dont know i smoke.. but they know i dip, so i smoke when im gone and dip at home.. today i coughed up blood, enough to scare me this was the first time its ever happened.. im worried.. i feel like i can feel it/ taste it in my throat. i dont know what to do? does anybody know what it might be? i can assure you i am done smoking.. but i just dont want my parents to find out i smoke.. im sorry if this is in the wrong section or something, i just signed up to get some help about this i am kinda worried.