First off, CONGRATULATIONS on graduating and passing your NP boards!! After 15 years of practicing as an RN, I will be graduating with my FNP in December and am so excited!!
Secondly, hogwash on those who told you that you should have become a PA. We are NP's for a reason and should be proud of our independant primary care provider status not to mention the many other reasons for becoming NP's!
What is a furnishing license? I am unfamiliar with the term "furnishing."
As for your job interviews, have you ever asked why you have not gotten a job offer? Maybe asking the ones you interviewed with would allow you to gain feedback for your next interview. Are you just applying for full time positions? A lot of part time positions end up becoming full time. How about the universities or local community colleges? I know around here, they always need clinical instructors. Another thought might be to volunteer at a Free Medical Clinic as an NP. At least this would be experience that you could put on your resume.
I am sorry you are having a hard time finding a position. I am not sure how the market is in your area, but around here, most of the new graduates have jobs prior to even taking boards. I wish you the best of luck. Keep us up to date re: the job search.
P.S. How were the boards??