Guys, I'm in trouble. What should I do?

Guys, I'm having a lot of issues right now. My father has been diagnosed with mild symptoms of cancer and my mother has all of his attention on him. Whenever she makes a promise with me, it never happens and my mother is doing a terrible job at taking care of me, as well as looking after her husband. Whenever I point out to them that they can't take care of me, they say they can, but I feel like It's a lie. Tonight, my mother was acting strange at dinner and I talked about it with my dad. My mother didn't come upstairs to comfort me after 30 mins, but at 9pm, she only came upstairs to say goodnight to me and when I told her the way she was acting, she said it was my fault and went straight to bed without caring about me. My father was on the same side as her. What should I do? Normally, I would move out, but I'm not ready to live by myself and my other family members live 5 hours away from my parents' house. I can't call child protection services at the age of 18, since I think that is illegal and I'm too scared to tell anyone. It's 9:30pm and I'm terrified. What should I do?

Guys, I'm in trouble. What should I do?
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