My parents pretend i don't exist

Okay so this is a long one so please bear with me. There's a lot going on in my family life so any advice would be greatly appreciated. Okay so my parents and I have never been really close. As a matter of fact, we talk twice max every week unless it's something important.

Recently, I was hospitalized for about a week as a result of not being able to eat anything without throwing up. I lost about 10 pounds and I was already extremely underweight, leading me to about 85 pounds. I was there through my birthday and my dad visited me for about 30 mins, and didn't even wish me happy birthday. My mom and sister only saw me once during the whole week. When my mom got there, she proceeded to make me cry by lecturing me about how it was my fault that I ended up in the hospital, although it was my digestive system. The night before my birthday, I had to get my first surgery (biopsy) and none of them were there.

I left the hospital and the medical bill came out to a whopping $80,000. I, of course, felt awful that this amounted to this much and that my parents had to pay by taking money out of their retirement funds since I was still a minor at the time. In addition, they would keep telling me that it was my fault and made me feel extremely guilty.

On a daily basis, I would feel like an outsider. My mom would take my younger sister out to a nice restaurant and leave me at home. They would make jokes and watch movies with my sister, but never me. My mom bought food, whether it would be snacks, fruit, pasta, etc. and hide it from me, only letting my sister eat them. I would eat one or two meals a day because there was no food in the house. I have resulted to going downstairs at 3 am every night to search for food when they are not awake. I would wake up on the weekends, only to find that my family was gone and didn't tell me where they were going. My dad constantly calls me lazy, sleeping too much, and that I have no direction or goals in life. They did not care about the fact that I was anemic.

In addition, we moved from Maryland to Washington recently, so I had no close friends or anything. I felt pretty alone and would cry myself to sleep every night.

My mom would constantly talk bad about me to other adults, saying that I was "below average" in school and never took care of myself. I thought I did well with mostly A's and one or two B's but I guess not.

I thought my solution would be to go out and get my own food but I have no money currently, especially with my parents refusing to give me any money even to buy simply necessities. I am in the process of applying for a job. However, I am tired of being hungry and tired 24/7 with no energy to complete my schoolwork. As a result of being a new student with no close friends or teachers, my grades have gone downhill as well. I've been wearing the same clothes forever since I cannot afford anything else. My parents buy my sister everything, from an iPhone X to expensive clothes. She's 11. I am not complaining but it would be nice to have my family feel like people who love me.

Please help. Thank you.