I feel like a bad mother 😭😓

So I asked my husband ( father of the child) to watch my son so I can take a break ( I’m with him 24/7) so my husband says okay and takes him to visit my sister in law. About an hour later he calls me and tells me he’s going to the er with our son that he fell and I’m like okay.. flash forward to when I get there my son has a BROKEN NOSE from what the dr said. Wtf right?he said he tripped and fell hitting his face off the carpet floor. My son is clumsy I know that but nothing like this has happened he’s hit his head fell on his face every thing. He’s almost 13 months and I feel like shit because I wanted a break and this happens.