Help Me.

well Ill go ahead and state my problem. Im an 8th grade middle schooler and have been facing some problems with depression and thoughts of the past (The good days). My life previously has been filled with much unhappiness. A seperation between my mother and father but no divorce, a house fire and the permanent burn effects to my mother's arm,a loss of my siblings to the adult world, and having to face myself in the mirror each day criticizing myself until I hate the world.. My mother has held strong still for 30 years of her life in a long struggle between her and my father and I myself have begun to become weary of it all. I started my life in middle school as the "loner". As I've progressed I've noticed that every night Im down and think about all the times of the past when I felt happy and good about myself, yet the problem with being me was that I was somewhat fat. Too Fat. So as I started 6th grade I began to notice myself more and more in the mirror and started cutting down more and more on what Ive been eating and bringing up the exercise a notch. So far I feel great that Ive lost weight, however I feel empty. In the past I usually had fun with my family but now, I seem to be out of it and just sad 24/7. Even my mom started becoming somewhat weary of her role as the "Mom" and has started becoming more and more attentive to our financial crisis and seems to be less willing to add in the extra sidejob to help me out when I need some simple. As years passed from 6th grade to 8th grade, I became the only child as my last sibling made her way to college. I know my problems may be nothing compared to other peoples' problems but to me in proportion this seems to be too much for me to handle. But what Im asking is, can you help me be me again?