
Improper breeding is most often at the root of the perceived infertility. To prevent this, the male tom cat may be bred to another queen to test his ability to impregnate. Your doctor may also advise you to change the amount of light your cat receives, including natural or artificial light, since cats' estrous cycles are heavily influenced by season light changes. Another alternative may be the use of gonadotropin, a hormone which induces ovulation in animals unable to do so normally.
If improper breeding does not seem at fault, your veterinarian will begin treatment for other underlying causes for infertility. For example, antibiotics are given if a uterine infection is suspected. Some of the surgical considerations include surgical repair of the obstructed reproductive tract, surgical correction of abnormalities in the vagina, removal of a cancerous ovary, and either draining or surgically removing the ovarian cysts.
Your veterinarian will schedule a follow-up exam to test your cat's progesterone hormone levels, and to perform an ultrasonography exam to confirm a healthy pregnancy and placental position.