Can I apply for green card ?

What is your spouse's immigration status? If he/she is a U.S. citizen, you may be eligible for lawful permanent residence even if you married after your status expired. Are you subject to the two-year home residency requirement? If so, you will require a waiver. You can read more about adjusting your status to lawful permanent resident at http://myattorneyusa.com/adjustment-of-immigration-status.