I need help!

so i was really good before i lost my virginity last year. i was 14. and i didnt really lose it, it was taken. but ever since then ive let guys take advantage of me and even those who seem to be my friends just want me for sex and it hurts me more and more. and the idea of having a bf? yeah, no. it makes me sick and idk if its a way of my brain trying to protect me but i think something is really wrong with me because now my parents are dissappointed, school isnt my biggest priority anymore and i blame myself for everything.