Desperate college student.

I'm 6'1" and have less than 3% body fat with a very fast metabolism. I smoke pretty frequently and the last time I did was the night of 1/15/2013. I've been drinking enough water/cranberry juice to have to pee every 10 minutes or less.

Any estimates on how long it would stay in my system for are appreciated. Please link any sources.

My school recently moved 2 majors within the university. Information Systems(IS) and Information Security Assurance(ISA) were moved from math and science to the business school. With this transfer came entirely new classes required for the diploma. There was a small amount of time available to finish the degree before the switch and I was not able to finish in the time allotted as well as hundreds of other students.

I have spoken with the head of the department in charge of this transfer and have been told that to continue my major I would need to have all the new classes to graduate which means starting over from scratch as I would have 68 credits of electives which doesn't do me any good. The school won't allow any of the old classes to transfer into the new ones. I would also need to reapply at the university for the business school just to continue the same major. My credits also won't transfer to any other majors according to the school.

The school is Kennesaw State University in Kennesaw GA.

I have no idea what to do anymore, I'm over 20k in debt from my student loans with nothing to show for it and the interest keeps rising as I don't make enough money to pay anything back. I'm getting desperate and this is causing me severe depression. I'm afraid to transfer schools because I've had to do that before and don't want to lose half my credits again, my last school lost its accreditation and no other schools will accept the credits from it.