4 months 16 days and growls all the time (zombie style)

Keri

my four-month-old continuously Grunts and growls and won't stop then squeals at the top of his lungs should I be concerned of the growl it sounds like it could be painful and his face turns bright red when he doesn't then Smiles so it doesn't look like it's pain but it's weird because he continuously does it over and over and over for hours please help any moms out there that have ever been through this type of kid