It is really scary

You should see a GP and try to get some medication to help if they're a big problem for you.

Well, perhaps, but there's no evidence to suggest that they would. If there was a problem, they would warn you about it on several occasions. Also, your GP is looking to help when they prescribe medication.

I tried to call my GP, none of the attempts was successful because their line was soooooooo busy

Try calling at/shortly after 8am (or whenever they open) for a few days, and if that doesn't work, you could move to another one in the area, since that takes a couple of weeks.

There is no hope.

Are these posts real, because you have started numeous threads, some saying you are a student and some saying you are going to start in September. The common thing in all of them is that no one will help you, and you can't speak to anyone. Mental health is a very serious and traumatic condition, and if you are seeking attention on these for fun that's disgraceful. St Andrews has very good mental health support (one of the reasons that they are top or second for student satisfaction every year). I can back this up, knowing students who came with ADHD, autism, depression OCD and anxiety and in all instances they were very well supported. Please stop posting this attention-seeking cryptic nonsense as it's offensive to people I know.