If your kid were screaming in pain for two days - would u take him/her To the doctors - Or would u just look on Internet to see if u can help- Your pet is like a child - it needs u To take care of it - So do your job and take it to a vet and stop letting the animal suffer !
It is best that you take your dog to the vet immediately for treatment. This can prevent any fatalities that can arise from the snake bite. The vet would also administer something for the pain to the dog.
Common sense should have set in within 24 hrs. Any vet would tell you if you even think snakebite get to a vet pronto. Why would you risk your dogs life. Go now. If money's a problem most vets if it's an emergency will let you pay off the bill no matter what the outcome. So take your dog now.