Is this child abuse or am I just being stupid?

I don't know if this is really abuse or if I'm just overreacting. My mum doesn't really buy food so there's never any in the house and she lets my medication run out lately. Shes at work and leaves me home to school myself with resources I find on the net because she can't use the computer or afford workbooks and even if we could we can't get to the supply shop because we don't have a car any more. She never talks to me when she is home because she says she's to tired from work (even though she only works 3 hours a day cleaning) and also can't help me with schoolwork I find hard since she didn't finish high school. I wish I could move because she yells at me for not cleaning (even though I'm bed ridden) and for everything else and then says I should just move to my dad's but I can't because he's got 1 to 5 years to live and is going to jail soon anyway and I can't run away because I don't want to leave my dog because she hits him and I can hardly get out of bed anyway so if I did my fibromyalgia, patella femoral, equines, depression and circulation would get worse because I couldn't get meds and have no other family.