Gasping for air/wheezing sounds?

6-month old sometimes making sounds that are concerning to us. He had his appointment today and doctor said babies make all kinds of noises, but is kinda concerning? He seems fine otherwise and doesn’t always make those sounds. Is that normal? Fiancé scared that he might have asthma or something and I’m kinda getting concerned... also he sometimes makes those wheezing sounds when he’s nursing so def not from excitement but just while he’s breastfeeding - again, not every time, but I’m worried that he’s not getting air 😩 this is a new thing too, never heard him do that before