Newborn nursing HELP!!

Da
Baby is 6 days old and the last day and a half has gone from easy latching to rooting around like he can't find the breast even though my nipple is in his mouth. He kicks and cries in frustration and it takes him forever to finally latch. A few minutes later he will pull himself off. Why the regression in latching? He also has constant tummy gurgling and has been fussing every night around the same time. I'm worried he may have an intolerance to my breast milk. 😢 Someone please help. I'm exhausted and hearing him scream in discomfort has made me cry.