@literally45-- Yes, runny nose and eyes are heroin addiction withdrawal signs. They can occur in anyone with an addiction, regardless of how long they've been abusing the drug.
I supported my friend who used to be addict throughout withdrawal and witnessed everything he went through. The runny nose and eyes were the first symptoms he developed. Then he got diarrhea, went through periods of feeling hot and cold, finally the pains and cramps started.
I think the cramps were the worst for him because couldn't sleep because of the pain and felt terribly depressed too.
But he made it through. He had to take something to be able to sleep. Eating helped a lot and relieved some of his symptoms. It took him about a week to start feeling better again but he has been clean for three years.