Baby gasping for air

Giselle
So my son gasps for air like he is having trouble breathing. Sometimes he does it do hard and loud he wakes himself up. It's only when he's sleeping. It scares the crap out of me. My first son never did that. He also gasps really hard and loud when he's eating. Anyone else have babies that do this? I have a few friends that say their kids did this as babies and its normal and they just outgrew it.