I have a really bad complex about myself?

My mom does it too, she always complains that I have a bad complex about myself. Shes pretty, overweight, but pretty. She is always saying shes hideous, fat, stupid, slob. Shes done it since I was a kid. (im 16 now). Everyone says im gorgeous and I look like a model but I just dont believe them. They all say im just doing it for attention and fishing for compliments. I feel sad whenever I look at myself. Whenever I go out to places, I do my hair but then I just have a complete break down. I scream, throw things, tell everyone I hate them. My sister tells me im stupid and annoying for acting this way. Ive actually felt like killing myself. I hate my fat arms, everyone says they arent fat, but I think they are. My legs have stretch marks from growing so fast, my stomach is fat, I have dark hair all over my legs & arms but my mom wont let me shave my legs, she says im not old enough yet. Ive tried to explain to her but she wont let me. Dont even get me started on my hair, I hate my hair. It looks like someone took the top off a mop and put it on my head. Ive tried curling, straightening, and leaving it the way it is. Ive always been.. picked on when I was a kid. My dad always called me fat, because I would eat ice cream a lot, and he would say im stupid, and my mom is stupid. I always try to tell myself im beautiful, but I just end up crying more. I wear little makeup, my mom says a lot of makeup is sleazy, so only clear mascara and lip gloss she lets me wear. Im failing all of my classes. Ive never had a boyfriend thats lasted for more than a week. Guys always tell me im ugly, fat, a whore, annoying. I only have two friends that I really talk to. I have a crush on this guy, and we hang out a lot, and he got jealous one time I was talking to another guy, but hes very popular and has a lot of friends, he isnt the player jock type though. People say im just a drama queen. Im mean to everyone I love, I called my sweet puppy stupid the other night, and I dont even mean it.. I just feel irritable. I act like I love myself and I know im gorgeous, but I really dont see it. I have an eye doctor appointment tomorrow and someone is going to have to literally drag me out of the bed to get me to go. I just dont care about anything anymore, I dont care about my hobbies (fashion, guitar, video games..). When im walking around in the mall, people give me dirty looks, like im some kind of alien. I think I have BDD, but I dont want anyone to think im vain.. So I just ignore it. Please help, I am getting tired of my life. I want to change it but it seems like I cant..