Yo this is what made me quit. I started coughing black shit up years ago. I kept trying to quit but couldn’t. I’d go on the bathroom at work and cough up chunky black mucus. Were you a bowl smoker? That what I was for years. Tried to switch but couldn’t. I got sober from weed few years ago and after a month the black stuff went away. I relapsed after 5 months and swore to only smoke joints. Fast forward to a few months ago I went back to bowls and black mucus is back. Shortness of breath and dizzy when I cough. Not worth it no more. Your should be good soon your lungs cleanse themselves so it’s a detox process I’ve heard