Hi and welcome to PC.

You certainly have a lot on your mind! Sorry to hear you're struggling.

I am a great believer that self diagnosis is usually unhelpful as we can often misinterpret symptoms as we are too close to our own problems.

My suggestion is that you see a doctor or school counsellor if that is available and they may be able to guide you to the support you need.

The diagnosis is not necessarily the most important aspect of someone's issues as we are more complex than labels imply, but I do agree that having a diagnosis can help other people take your issues more seriously or give easier access to therapy.

I wish you the best of luck as you try to find a way forward.