If your cat is pregnant it is important to be aware that there can sometimes be post natal complications. Being aware of this & watching closely for signs of symptoms of a possible problem will mean that these problems will be picked up, and treated as quickly as possible.

• Postpartum hemorrhage: As stated above, some discharge is normal, but if the discharge is bright red, or there is an excessive volume seek immediate veterinary help.
• Mastitis: Mastitis (inflammation of the mammary gland) occurs when the lactating queens mammary gland(s) becomes inflamed, blocked or infected. Symptoms include pain, heat & swelling of the affected gland(s), fever,  milk may be bloody, yellow or thick, the queen may refuse to let her kittens nurse from the affected gland, the queen may become depressed & lose her appetite & become dehydrated, lethargy, sick or dying kittens.
• Acute Metritis: This is inflammation of the lining of the uterus (endometrium) post partum. It is most commonly caused by a bacterial infection. It can be caused by retained placentas or kittens, or unsanitary conditions. Symptoms include; lethargy, vomiting, diarrhea, anorexia, fever, foul smelling, dark discharge from the vagina.
• Agalactia (complete lack of milk supply) & dysgalactia (decreased milk supply): This may be caused by inadequate nutritional support of the queen,  large litter size, deformed nipple(s) or occasionally caesarean sections. Suckling should be encouraged as this assists with milk production (the more stimulation, the more milk is produced). Fresh drinking water should be available at all times, and she should be provided with as much high quality food as she wants. By the second week of lactation, she will require up to three times the amount of calories as a non pregnant cat. Kittens may cry & fail to thrive. Your veterinarian may recommend you supplement the litter or he may prescribe a medication to assist with milk production or both.
• Eclampsia Also known as milk fever or puerperal tetany, eclampsia is a life threatening condition which occurs in late pregnancy or after birth as a result of blood calcium levels becoming dangerously depleted, leading to  hypocalcemia. Signs of eclampsia include restlessness, anorexia, walking with a stiff gait, high temperature, increased respiration rate, trembling, convulsions.