Don't be discouraged by the lack of response. You may have submitted your application prematurely given your graduation/ relocation date. Each facility posts new grad positions at different times. Check their websites frequently, or sign up for new job listing alerts.
Look at where you want to live in the Raleigh area, determine your acceptable commute, then apply to every facility in the area. UNC, Duke, and WakeMed have multiple campuses. Be sure you're looking at all of them!