Must pay back immediately College Trip Abroad Program or I can't continue in college?

I flew to Europe on a college trip abroad program. I never took one cl as I became ill and flew back to the US within a week. I didn't get a doctor's note. If I took one cl I would not have to pay back my school immediately. Now, I can't go to college until all is paid. I was told there is no repayment options as it must be paid in full. Mom is selling her house, furniture etc. Not doing very well. Is there anything I can do to make more money as soon as possible to pay my school. I am a great student in a University school and unable to get money as fast as the next semester starts, I,don't want to default and never finish school. I work 24 hours a day and just don't know what to do. My tears will soon flood the earth.