I do the talking in my head thing. When I'm stressed I anticipate fully dialogues arguments with people in my head. My Psych NP calls it self talk. I have heard voices outside my head before,,totally different thing and you'll know it if you ever experience it. I would definitely talk to someone though.
Hi Sebastian. Welcome to the forum :)
You are really dealing with a lot right now. Some of what you have described sounds very familiar like the confusion, anger/rages, panic when doorbell rings, feelings of guilt, etc. but hallucinations would be something I would want to talk to someone about.
Have you been able to talk to anyone about this yet? By anyone I mean an adult you trust.
I'm glad you posted and have started looking for help. Hopefully another member will have more suggestions. But for now, I would focus on talking to an adult first and asking them to help you make an appointment with your doctor.
Best wishes to you and stay in touch.
M