It has been an up and down month of April for NC State, which lost five straight before taking a weekend series at No. 2 Clemson four days ago. It appeared its sluggish play as the Pack found itself down five runs in the eighth inning when the Wolfpack hosted Campbell for a midweek contest Tuesday night. But the red and white’s late rally against the Camels fell short in extra innings. NC State stormed back to tie the game in the final two frames before Campbell scored three runs in the 12th to win it 11-7 at Doak Field. “It’s a loss,” NC State coach Elliott Avent said postgame. “That’s it. It…