Girls, hi! I'm in panic!! Son was sitting in the pavilion, didn't noti…

Girls, hi! I'm in panic!! Son was sitting in the pavilion, didn't notice how he went potty big time, there was no smell, as soon as I saw it, I ran to wipe him under running water. The baby cried, I barely calmed him down, put him on a diaper, but his little penis and the area around it is red, his bottom is also red. The baby cries, screams. I smeared with Sudocrem, more or less calmed down, fell asleep. I'm really worried... could this be irritation from being in a diaper for a long time? My brain can't even explain how I missed that, he was crying along with him. So