4 month old pausing breathing then crying out when catching breath while asleep?

Dannielle 🌹🇬🇧 • Scarlett 💗 George 💙 Ella-Rose 💗 Insta: mummyblogz
My little one was just asleep on my when I noticed he started to have pauses in between his breathing... Then he would whimper and sort of cry in his sleep then catch his breath then settle and he then did it again and again about 6 or so times now he's breathing fine and fast asleep again... ?? Anyone experienced this or have advice X