I'm having a minor problem with my mom?

Ok, i feel sick today my stomach hurts real bad and i have been vomiting acid and sometimes blood since yesterday. I feel that i want to go to the hospital. Anyways my mother is mad at me because i'm in bed late in the afternoon and because i'm not doing my chores. She constantly goes to my room to give me "the look" I understand that i need stuff to do in the house but i really don't feel good today. Another thing is that my mother snapped at everything lately like oh you left the trash bag here, Pick up the clothes that you dont want now. She got really crazy because i drank a margarita mix last week she bearly found out now. She started hitting me, throwing my purse, slamming my cell phone to the wall that mix only cost her a dollar she told me to get up and get some more where she has some in the fridge. And telling me that my friends are not allowed here only brother and sister's friends. And here i'm still sick crying and thinking what's wrong with my mom? Should i just do the chores? I'm 25 yrs. But sometimes i feel i'm treated like if i'm a teenager. What's wrong here.?? Please help me!?