I'm the worst mom ever

Ta

my precious boy fell off the bed!! the bed is somewhat low and we have carpet but he was crying so much I feel like the worst mom in the world. how could I let this happen? I turned around for 1 minute to grab a diaper and come in a second after I heard the thud. omg 💔 idk exactly where he hit his head but I think there may be a small dent? I'm not sure though, I finally got him to fall asleep after holding him while he cried, I let him nurse/comfort nurse for an hour . hes finally asleep on me and I'm scared to move because when I do, he wakes up crying 😭 should I call my pediatrician? go to the er? I'm so scared please pray for my sweet boy