Am so sorry you had to say goodbye. It is the final act of love that we do for our little ones, but no words can ease the pain that you feel right now.
It won't always feel this raw, I read a poem that was so touching, it was written as a will that a poorly dog writes, it left it's loving family to a dog in need, it takes about wanting another dog to inherit all the cuddles and walks and playtimes. It ended by thanking it's family for recognizing that it was time to let him go to sleep because he was tired and didn't feel well enough to carry on.
I think all of us in this thread will shed a tear for Bailey and you today. Have a hug from us all. X