All will be well they have to prove beyond reasonable doubt that it was intentional.you will not loose your licence .the worst that can happen is every 3 months monitoring
This is my thoughts on that if you choose to say yes then they can use that agaisnt you in future if you get in any problem during your practice .if you say no and you are going for therapy then your therapist can call your licence in to the DOH.The choice is yours whether to report or not..at the end only you have to answer to them
I would answer no if I were you,because depression is not a disability and if u made it through Nursing school more kudos to you,that said I know many nurses working in washington who are on antidepressants,and they do not have to report.