Baby whining at breast

ASHLEY • ♏️ EBF Scrunchy Mama 👱🏼‍♂️💚Tristan & London💙👶🏽

My son is 3.5 weeks old and we are still learning this BF thing. We are doing so much better but a few times he has been latched on and will pull back with my nipple and whining and whimper. Does this mean he isn’t getting anything? He seems so frustrated.