Hi there,
It sounds like you and your family are under extreme amounts of stress. Having the responsibility of caring for your family while dealing with your own mental health issues is hard enough. Not having their support and them telling you to "get over it" would make things a lot more painful, I'm sorry that you've had your depression be dismissed and minimised. I'm glad you shared your story here. I hope you know that your mental health is valid, and you're incredibly strong for seeking treatment despite the discouragement and lack of support from your family members. Seeking treatment for your depression is an amazing strength and step that you've taken. I'm so sorry that your family has tried to make you feel weak or ashamed for that.
Based on what you've written, from the sounds of things you made a decision to protect yourself and your parents from more emotional and physical harm by blocking your brother, and I don't think you did the wrong thing by any means. I know I may not know the full story.. But from an outsider looking in, that's what I see.
I hope that once the situation is de-escalated, and perhaps your parents have had more time to think and process everything eventually, they will understand the decision you made. It sounds like emotions are at an all time high and things are very hostile, and sadly people aren't really in the space to think things out logically.
You mentioned that you feel suffocated, and I see the same thing. I hope you can be patient and accepting of yourself by realising that you are under a lot of stress and responsibility to care for your family. Maintaining and treating your mental health should be a big priority of yours, especially under these extreme circumstances.
You mentioned that you've been getting suicidal lately.. I'm wondering how you would feel about reaching out to Lifeline or another service as Sophie has mentioned if you feel like these thoughts get too much or that you might act on them?
You aren't selfish for putting yourself first. You can't be a support system for everyone else if your mental health is suffering, and no one should expect that of you.
Again, thank you for sharing your story on here. I'd love to hear from you. I hope you're taking care.