Missed or delayed heat cycle
Enlarged, pinker nipples
Increased appetite
Weight gain
Swollen abdomen
More affectionate behavior
Nesting behavior
Mild lethargy
Vomiting or morning sickness
Veterinary confirmation by palpation, ultrasound, or X-ray
Missed or delayed heat cycle
Enlarged, pinker nipples
Increased appetite
Weight gain
Swollen abdomen
More affectionate behavior
Nesting behavior
Mild lethargy
Vomiting or morning sickness
Veterinary confirmation by palpation, ultrasound, or X-ray