How can I get some self-esteem?

I don't feel like I made my parents proud even though they say they are. I'm the only one of of my parents kids to graduate from high-school and not end up pregnant. These should seem like very good achievements but I still feel awful. I feel as if I should of been prettiier or smarter and going to a better school to make them truly proud. But I'm just a fat slob that end of getting lucky and of course I didn't get pregnant because no real human being would want me. They keep saying their proud of me but I feel as though I don't deserve it. I hav't done anything every other person has done. What do they have to be proud about? I'm nothing. <---see feeling like this come out of nowhere and I hate it but they won't stop coming. I want to make them proud but I have only a 3.2 gpa no job, I'm obese, stupid, ugly, lazy, and only seventh out of the top ten. Also I'm going to University of Milwaukee and that school is weak because everyone is going their. I'm not Valedictorian, or have a job at a the hilton, or going to UW madison with a full ride like this other person is going. Now that's something to be proud about. I'm jelous of him and this is making me sick to my stomach. I now just want crawl into the nearest dumpster and die.