Welcome to your new thread, I read your other one about the racist unprofessional doctor, it enough to put one off seeking help.
Parents are special to their children -which seems pretty obvious - but they have an influence for good or bad that can affect a person there while life.
I'm afraid to you have been subject to constant abuse, first having the fact you are a girl held against you, then your parents telling toxic tales about the families, then their fights. Sadly I can picture you too frozen to turn the heat down when they were fighting. Under the circumstances I would think many would have reacted in the same way.
Life has thrown a lot at you and trying to cope wiht it all does not get easier just with age. At 25 in a country that does not look down on females your life should be so much better than it is.
At the moment you have mentioed "nightmares, sleeping problems, hard time breathing from time to time and maybe some mental problems, I haven't been officially diagnosed. I now have difficulties trusting anyone, or even talking to anyone face to face..."
This is a horrible way to live and you were on the right track seeking medical help. I too have had those symptoms, but form a different cause, and I know that I could never seem to make myself better.
It does not matter what your parents think of mental health problems, you are old enough to steer your own way, and decent medical help is the start. Over time I improved out of sight due to that help, (which was a change of scene, therapy and medications in my case).
So can I suggest you try again? As I mentioned the other day you are in control and can discard any medical professional who does not meet your very reasonable standards.
I know your parents are no help -quite the reverse - do you have any family over here or a friend with whom you can talk frankly, lean on them and feel cared for? I was lucky that way.
Apart from HappyHelper88's good suggestion of contacting the Beyond Blue Help Line I'd also consider giving 1800RESPECT - 1800 737 732 - a call. They are most experienced in family abuse and may be able to give advice and recommendations as to that needs doing. I do believe the sometimes give counseling too.
The effects you suffer from can be reduced right down -I'm an example of that .
I'd like it if we talked again