Please, please LoveableLC.... talk to your doctor and let him/her know, no holds barred, exactly how overwhelming your life seems to you right now. No one should left alone to be crying for hours on end. That is just way too much pain to deal with, especially for a student who needs all the support she can get. If that is too much, get a hold of a friend or family member to do it for you. At this stage, I think that you really do need to talk to someone.
Let me tell you a couple of things about myself, okay? I am 20 (how old are you, BTW?) and have been living at home most of my life, pretty much raised just by my mom. Life kinda sucked for me right from the start, and I was on anti-depressants by the time I was eight years old. School was always a struggle for me, and I ended up dropping out my freshman year of high-school. Naturally, I always had a weight problem; but the day after after I turned 18 I broke up with MY boyfriend (who was also a very sweet individual, it was just that he couldn't handle my depression anymore.) Anyway, I basically decided to just give up, shrivel up into a ball, and wait for a time when I could die.
A few months went by, and then I got introduced to Justin. You know the type....? Funny, tall, dark, smart, incredibly handsome and &$%#ed-well knows it? I fell for him instantly, even though I though for sure that my heart was dead. As it turns out, he didn't reciprocate the feelings. We do, however, have a wonderful friendship that I know I will cherish the rest of my life. He talked me into going back to school, and, well.... I guess the point I am trying to make is that even if you think you will never feel better, life can still turn around and totally surprise you. The ups and downs can be hard to manage unless you have a different perspective point or two, and....please do not feel offended by this... I would recommed counseling if you are not all ready involved with it. Group therapy did wonders for me.
Anyway, though, I am totally here if you would ever like to talk... just send me a PM, and I will answer ASAP.

Oh, yeah... Congratulations with your weight loss! All that stuff happening in your life, and you are still down 21 pounds? Wow, LLC! That is absolutely amazing.