when i apply for new visa do i include that i have stayed an unlawfully in the United States?

Although it seems like a very small violation of status, perhaps the best policy is to put it down and explain exactly what happened in your application. I imagine that most consular officers would not hold such a small infraction against you. Due to the limitations of the Lawyers.com Forums, Alan Lee & Arthur Lee, Esqs.’ (the "Firm") participation in responding to questions posted herein does not constitute legal advice, nor legal representation of the person or entity posting a question. No Attorney/Client relationship is or shall be construed to be created hereby. The information provided herein by the Firm is general, and requires that the poster obtain specific legal advice from an attorney. The poster shall not rely upon the information provided herein as legal advice nor as the basis for making any decisions of legal consequence.