My mom makes me sad and all around unhappy, why? what do i do? please help.?

I'm 17 and i think that im just now realizing that all these years my mom is to blame for the reason ive always been unhappy. I've always been very intuitive.. and i think i have absorbed everything about my mom. All her stresses, and i think that theres something off with my mom. something is not rite with her. Ive been having terrible anxiety all day crying and feeling so low and depressed. and i found that if i put my mom to the very back of my head i felt perfectly fine... if i dont think of her i feel all better. Its very strange, and i dont know what to do about this... your mom is supposed to bring comforting and she brings the complete opposite. your mom is supposed to inspire and make you feel good about yourself and she makes me feel the opposite of that. WHAT is wrong with me? why is it like this for me when it comes to my mom? i dont know what to do. PLEASE i would really love some advise.