You may not notice any pregnancy signs in your dog for the first three weeks. At about 4-5 weeks, clear mucoid vaginal discharge may be seen, which is a very good sign of pregnancy. Other signs noticed may include enlarged nipples and increased appetitite.
- It is possible to confirm gestation through an ultrasound scan between 21 and 28 days gestation.
- During the 3rd week after mating, a pregnant dog will go off her food for about 10 days.
- The abdomen usually swells 20 to 50 percent, but this may not happen until a few weeks before birth.