To determine if your cat is pregnant, observe for physical changes like abdominal swelling, weight gain, and swollen mammary glands. Behavioral cues include increased appetite and a clear or milk-like discharge. Veterinary exams and ultrasound can confirm pregnancy. Gestation lasts 60-65 days, supported by progesterone. Prepare a birthing box and maintain a serene environment. Post-kittening, provide kitten care and monitor the mother cat. Remember to spay or neuter to prevent unwanted pregnancies.