As long as you are working full time now, and it's related to what your major was, then you should be fine to use your new employment and it's income to qualify.
The fact that there were periods of unemployment, part-time work, or even if you didn't receive either and your parents helped you with every single expense... that is all A-OK, and won't be very important to the lender since you have a full time job in the profession you have studied to be in.
Now if you aren't in a profession you majored for in school, then it'd be up to an underwriter's discretion to permit it to qualify. If it is a career oriented job (ie. like the operations manager of a Walmart, instead of an assistant manager at Walmart) then an underwriter probably will still find it acceptable to use.... more