I’m so sorry for your loss. I know how you feel.
I’m dealing with guilt as well. I have some ok days, some better days and some really bad days. Please don’t blame yourself. The autopsy results clearly shows that there was nothing you could have done to prevent or save your baby. I wish I was given an option of autopsy. Pecan passed away as soon as we rushed her to the vet and I was in shocked to ask for one and the emergency vet never offered it either. My sweet, beautiful and perfect soulmate passed away so fast and I don’t even know why. She was only 9. Please be kind to yourself and know that your dog loves you and know how much you love him. He’s right there beside you because love never dies.