How to bring up depression?

How do I tell my doctor im depressed 😔 like extremely depressed. I dint want to die but I dont want to live either rn. I love my kids. I have a little boy and currently 20 weeks. I dont want to be labeled or have cps called on me. Its just how im feeling. And idk what to do. I smoked weed daily (had my medical card) obviously cant do that anymore and its just gotten worse with each passing week idk what to do anymore. I cant even connect to this baby like I want to idj what's wrong with me