Oh Sky,

Hon, I'm so sorry. Please don't second guess yourself. I know that is the one thing I did when we had to put our dog of thirteen years down and it just made it harder on me.
You did the right thing. Trust your judgement. You know in your heart that your dog is in a better place now.
I'm so sorry for your loss.
I hope things will get better for you soon.
Thinking of you,
Linda