Fall off the bed

My 8 months old baby fell off the bed yesterday. It was very quick, less than a minute that we left him. We barricade with pillows but didn't work 😪 We monitored for about 2 hours, he's still chirpy, drink milk as per normal and no visible injury. Should we be overly worried? As some said as long as baby does not vomit or show low active level, it's ok. 🥲