I see you say your dog has been pregnant for 67 days. Normal pregnancy averages 63 days from the first mating. However, it is not unusual for a dog not to have her puppies as long as a week later than that. It really depends on when she ovulated and became pregnant.
Some dogs also experience false pregnancy. They will have the weight gain, breast enlargement and even can have milk production and not be pregnant.
There are a few ways to determine if she is indeed pregnant. They are:
Have your vet run a blood test called Relaxin to confirm pregnancy based on hormonal levels. They can also gently palpate the absomen at around 28-30 days after breeding to feel for puppy bumps. They can also perform an x-ray during the final week of pregnancy (8th week) and look for puppy skeletons. This method can give you a good idea of how many puppies your dog may have. An ultrasound can also be used to look at the uterus if a pregnancy is suspected though not all vet have ultrasound equipment in their office for this purpose.
If you can feel the puppies moving around, then it isn't a case of false pregnancy. One way of knowing when your dog with have her puppies is to take her temperature twice daily at the same time each day as her due date gets close. Keep a record of this.
A dogs normal temperature is between 101-102 degrees. Her temperature may rise and fall during this time, but once her temperature falls below 99 degrees, she should go into labor in the next 24 hours.
You may also notice her breasts swelling during this last week of pregnancy and some milk leakage. Dogs will usually become restless and increase their digging and nesting behavior during the last week. You will notice an increase in her panting as well. You may also notice some abdominal contractions or rippling as her time grows closer. Do not be surprised if your dog is very restless and vomits as few times during this last week.
Once your dog's temperature has dropped, please do not leave her alone in case of complications. As she enters actual labor you should be able to see her contractions and most dogs will begin looking at their hindquarters. An increase of licking of the genitals is normal before and during labor. Be sure and have an emergency Vet’s phone number readily available just in case of an emergency during the birthing of the puppies.
If your dog is actively straining to deliver a pup for over an hour and no puppy is delivered you should contact your vet in case the puppy is stuck. A stuck puppy can die inside their mother and cause serious complication.
Here is a good site concerning pregnancy and whelping for additonal information.
Congratulations on your upcoming event.
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