I feel drained

I feel so useless as a human nowadays and its so tiring and everything is so overwhelming. My exams are coming up soon too and i have to study and get good marks for my mom. I feel like a useless daughter who cant do shit and just existing. I also feel very disgusted with my body but im so physically and mentally exhausted to do any kind of exercise, i sometimes starve myself and end up binge eating later. Worst part of all this is that im getting worse breakouts on my skin i feel so ugly.. sometimes i feel so bad for my girlfriend to have such an ugly gf like me. I just really hate how i look and think about myself. I just wanna be happy and energetic, is this all too much to ask? Can anyone help me or give me any kinds of suggestions. I just want to clear my mind..