** Thanks for contacting HCM with your health concern 1. Since drug abuse is associated with multiple health hazard(s] and as there is spitting of blood [hematemesis] and not coughing [hemoptysis] thus take it as a danger sign and seek immediate help of a doctor or rush to ER [emergency room to get a chest X-ray done] since complication arising from heroin use is/are: . pulmonary embolism . endocarditis . pneumonia.. thus see a chest specialist to exclude other causes like deep vein thrombosis [DVT], infection [HIV/Hepatitis B & C] since injecting drugs exposes the user to an increased risk of acquiring various infections and the transmission of certain blood-borne infections. 2. Since drug addiction leads to predatory crime like shoplifting,burglary, robbery thus every drug addict is subject to arrest by police so think of her betterment [rehabilitation] before it s too late