Same last year, when I clearly broke a rib: first x-rays revealed nothing, one week later a second set revealed a really nice oblique displaced fracture, which was still hard to find.
Today the tibia also got x-rayed and it was a pleasure to look at, but as soon as it has to do with the chest, where all the organs are messing with the x-ray, one can really hope that AI will finally solve this issue, since every city has a couple of doctors with x-ray machines, contrary to MRI/CTs.