My moms addicted to drugs, advice?

Well, you maybe be thinking coke, herion, but is stuff like colonopin, addavan and stuff like that. She has tried to kill herself twice within the month. At first I didn't feel sad I felt angry and like I didn't care. Only because she's been doing drugs since I was like three. I'm 14 now. Lately I've been crying myself to sleep. Also, lately I've been obsessing over my body. And thinking about staving myself. Also I've been really really thinking about cutting again. (I used to be a cutter) some people think I night have BDD, but I don't think so. I just feel depressed but my family doesn't believe in. Well my dad doesn't and I live with him, and one of my sisters. I don't know what to do. I've always been really into my school work and now I could give a ****. I'm just so lost and down, I don't know how to act. Or what to do with myself. I would like to say I love my mother but, I feel like I cant. She chooses drugs over me and my two older sisters a lot, and I just wish I had a mother who loved me. I just want a mom I can rely on and be proud of. Well I'm looking for advice. Additionally, I can't go anywhere without feeling self concius. Today at school I wore jeans flip flops, a columbia and a tank/sweater and I felt so gross I changed into sweats. Its become very bad lately. I sometimes don't want to go anywhere because of it. My family is taking a trip to vegas in the summer and I don't want to go because ill have to wear shorts and tanks, and I don't want to look gross. Help me? Advice? Btw. Here's a picture of me. http://m.facebook.com/?w2m&_rdr#!/photo.php?fbid=217085834984767&id=100000500571900&refid=17