Swimming pool.

While other people are Xmas shopping i took G kids swimming. Pool was warm and only 6 people in the pool so everyone was happy . Took some photo s on the way home after dropping kids off , of light trails but as I had gloves on , and camera needing trypod , camera slipped out of my hands and crashed to the floor. Not a mark on it. Think the hood protected the lens as this shot off with lens cap. What has happened is the photo s I did take are not on my sd card , only the ones I took prior to the fall were?!