Girls, has anyone experienced something like this? Lately, our little …

Girls, has anyone experienced something like this? Lately, our little one is often choking on spit, turning red and seeming to stop breathing... I pick him up immediately with a suction bulb and it all goes away quickly, leaving only his calm down. I'm just worried, I'm scared to even move away from him right now. If anyone had, when did it go away?