Methods to determine whether a teacup cat is pregnant:

1. In the 2-3 weeks after the cat has successfully mated, the cat’s nipples will turn dark pink, and the nipples next to the nipples will appear dark pink. The hair falls out and the nipples appear particularly prominent.

2. Cats become lazier and do not like to move. Some older cats may also experience retching or morning sickness.

3. In the early stages of pregnancy, the cat’s appetite decreases, but as the pregnancy period prolongs, the cat’s appetite will gradually increase. You will find that your cat becomes very greedy and wants to eat everything, as if it is not full.

4. During the 3-5 weeks of pregnancy, the cat’s abdomen will gradually bulge, and the cat’s movements will become sluggish.

5. If the cat is falsely pregnant, these symptoms will disappear about a month after the cat mates. If the cat's belly is getting bigger and bigger after more than a month, and a gestational sac the size of an egg can be felt when touched, it can be determined that she is pregnant.

6. If you cannot determine whether the cat is pregnant, the most scientific and effective way is to conduct an ultrasound or X-ray examination.