No sound notifications

No matter what setting I have sound notifications on (full sensitivity, moderate, and light) I still don’t receive any sound notifications on my phone. My baby doesn’t usually get to the point of screaming crying, and I don’t want it to get to that point. But if I’m not getting notified in the middle of the night of her making noise, how am I supposed to know? I do use a separate sound machine (not the camera) for white noise and am considering moving it further from the crib to see if it helps. I’m losing sleep wondering if my