Dude, relax. 50% of the job is networking and contacts. If you get on well with the interviewer you get the job. If you know, or your friend knows, or whatever, some guy at a business you can get a job there. I was offered a £40k job that way which I declined to go to Uni, but will probably take if I don't get into Bath.
The major problem with this approach to getting a job is that you need to have reasonable self-confidence. I'm somewhat lacking in being nice and friendly to most people, especially people I am meeting for the first time. Still, those skills are buildable. A job in retail helped a lot.
I know you can assume the worst and never be disappointed but you will feel like shit until you get the results. Then if they're bad you'll wallow in self-pity: you were right all along, you correctly predicted how much you 'suck'. Remember academics aren't everything.
That said, the mere act of getting into University is impressive, no matter what one it is. So please don't keep casting the unis as bottom of the barrel; crap. A degree is still going to make a favourable impression on the interviewer. You'll still have a fun University experience. Seriously, unless you're going to Cambridge or Oxford nobody gives a foobar what uni you went to. Even that advantage is fading. As for course, you probably won't get a job in that field anyways.
A degree is more a mark of your ability to learn and apply knowledge and survive living on your own and all that jazz. Most people I know aren't doing a job in their degree subject, just ask Axeman