My question involves criminal law for the state of: Virginia

I was convicted for shoplifting in Macys in March 2009 and have no other DMV or Criminal record. I was finger printed and the court disposition letter says,

Crime code: 18.2.103
Class 1 misdemenor
Jail Sentence of 6 mnths imposed, of which --- days mandatory minumum, with 6 months suspended for a period of 3 years conditioned upon being of good behavior, keeping the peace, obeying this order and paying fines and costs.


Now my husband's dates were current, We are ready to apply for I 485 and below are my questions.


1. Do i qualify for Petty offense exception.
2. Since this is my first and only criminal record, can this be expunged after March 2012(3 yrs from commiting crime)
3. If my Husband adds me as derivative in 485 application, will it affect his application too..i dont want to ruin his GC because of my conviction.


Please review and reply back with details.