A timely filed I-485 that meets all the requirements allows you to remain in the US while USCIS processes it.
You should retain an experienced immigration lawyer to review all the facts, advise you, and handle the case. You can find one through http://www.ailalawyer.com.
J Charles Ferrari
Eng & Nishimura
The statement above is general in nature and does not constitute legal advice, as not all the facts are known. You should retain an attorney to review all the facts specific to your case in order to receive advise specific to your case. The statement above does not create an attorney/client relationship.
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Not if it was filed when you were still in valid nonimmigrant status.
NYC EXPERIENCED IMMIGRATION ATTORNEYS
Phone: (866) 456-8654;
The information contained in this answer is provided for informational purposes only, and should not be construed as legal advice on any subject matter.