13 month old stopped babbling & started grunting

Madilyn

Please help 😩 My sanity is gone. My son was doing so good at babbling and I was trying to get him to start saying things but he just stopped babbling and now he communicates by loudly grunting all day. He grunts and makes this weird throat noise all of the sudden. He still says mamamam sometimes but usually it’s just yelling grunts. It is driving me nuts because he constantly sounds like he’s in pain or he does it the entire time we are at the store but he is usually smiling or playing when he does it. It’s all. Day. Long. Is this normal?!