Welcome to the Forums @misstiramisu.
It sounds like you’re in a really tough place right now. It must be hard to feel supported in the family situation you describe. It’s great that you have recognised the signs of depression and have taken the proactive step of posting here on the forums. Well done! Please try to hold onto the thought that your feelings are temporary and although you feel overwhelmed right now, you will feel better again.
You’ve said that you’re afraid you’ll end up doing something terrible if you don’t get the help you need. You don’t deserve to be alone with that feeling and there is help available. I understand you don’t have a phone to call a helpline, but Lifeline and eheadspace both have chat services and the Suicide Call Back Service offers online counselling. These services can help you cope with what you’re experiencing right now and can talk through your plans for seeking long term support from a psychologist.
Lifeline
eheadspace
Suicide Call Back Service
Do you think you’d be able to take yourself to see a psychologist? If you’re able to make an appointment with a regular doctor, they can provide you with a mental health treatment plan, which gives access to a Medicare rebate for up to ten sessions with a psychologist.
@misstiramisu, there are lots of people here on the Forums who I think have been in similar places to where you are now. Please keep posting and let us know how you’re doing.