Gave him a cuddle and a feed, tried to set him down in his bassinet only for him to eject a huge amount of mucus (common in c section babies). It was everywhere, came out of his nose and mouth, and caused much panic in DH that hadn't seen it in the hospital as it had been at night after he went home.
So I spent the next 10 minutes changing the baby while reassuring DH baby was fine as he googled to double check and called his parents to wake his uncle (at 11pm) who was a GP to ask him if baby was definitely OK, complete with a video of babies breathing afterwards to check 'it looked OK'.