"Use the bathroom" is a human euphemism. I assume in the case of a dog that you mean "urinate" or "eliminate" and that your dog does not actually use bathrooms.
In any case, it is normal for a pregnant dog to urinate (and defecate) while puppies are being born. Try to clean up any elimination quickly without disturbing the dog.
I they are inside dog get them a birthing box or bed if an putside dog usually in their dog house or even under your house
Female dogs often get diarrhea after giving birth. This is caused by the mother dog eating the placenta, and should subside in one to two days.
Dogs normally give birth between 58 and 64 days so this is normal.
As a human, you do not. Only dogs can give birth to dogs. It is like "How do you give birth to a human?".
were dogs use the bathroom
No.
possibly. depending on age.
Yes, dogs are mammals. They reproduce through becoming pregnant and giving live birth.
yes dogs do lose their hair after giving birth and it would last proably for six months.
they are excited and in a rush
No
Nope. Dogs don't need any help.
Yes
cause they tired of the night they had so they are stressed
Yes dogs can have babies because they have sex in their way just like we have sex in our way. yuck!but is true
Parturition is called whelping in dogs.
Yes, often. It's a painful experience.
Female dogs often get diarrhea after giving birth. This is caused by the mother dog eating the placenta, and should subside in one to two days.