The two additional probable cases bring the total number of likely cases to four. One is in Craven County and the other is a second one in Onslow. The two from earlier this week are in Wake and Onslow County.
The Centers for Disease control and Prevention has not confirmed that any of the cases are swine flu.
State health officials say confirmation could come any time.
Authorities say one of North Carolina's new cases is someone who lives with a case that was already known about in Onslow County. The family recently traveled to Texas.
The second new case is in Craven County, and officials are still investigating how that person could have gotten the disease.
State lab technicians are working around the clock and have tested 334 specimens, with 258 coming back negative and 76 still pending.
NC is expecting more truckloads of anti-viral medicine and personal protective equipment to arrive in the state within the next 24-48 hours.