Some bleeding three days after your cat gives birth is normal. Cats produce a vaginal discharge called lochia for up to three weeks after delivery, and in the first few days it is typically dark red to black and heavy. This is the uterus shedding the lining that supported the pregnancy, and it should have no noticeable odor. What matters is whether the bleeding looks and behaves like normal lochia, or whether something else is going on.
What Normal Postpartum Bleeding Looks Like
After delivering kittens, the uterus goes through a process called involution, essentially shrinking back to its pre-pregnancy size. During this process, your cat will pass lochia from her vulva. In the first few days, this discharge is dark red to black, relatively heavy, and has no foul smell. Over the following one to three weeks, it gradually lightens in color and decreases in volume until it stops entirely.
At three days postpartum, seeing a noticeable amount of dark red or brownish-black discharge on bedding is within the expected range. Your cat should otherwise be eating, nursing her kittens attentively, and behaving normally. If that describes your situation, what you’re seeing is likely the normal healing process.
Signs the Bleeding Is Not Normal
The color, smell, and amount of the discharge tell you a lot. Bright red blood (rather than the dark red or brownish color of lochia) can signal active hemorrhage rather than normal shedding. A sudden increase in volume, especially if it’s soaking through bedding quickly, is also a concern. And any foul or rotten odor coming from the discharge points toward infection rather than routine recovery.
Beyond the discharge itself, watch your cat’s behavior and physical state. Warning signs include:
- Fever or lethargy: your cat seems unusually tired, unresponsive, or warm to the touch
- Loss of appetite: she refuses food or water
- Neglecting kittens: decreased maternal instincts or reluctance to nurse
- Continued straining: bearing down as if still in labor
- Pale gums: healthy gums are pink, so white, gray, or very pale gums suggest significant blood loss
- Rapid or shallow breathing
- Vomiting
Any combination of these signs alongside bleeding warrants urgent veterinary attention.
Retained Placenta
Cats deliver one placenta per kitten, and ideally all of them are passed during or shortly after labor. If a placenta or a piece of one stays inside the uterus, it can cause prolonged or abnormal discharge. You may notice your cat straining as though she’s still trying to deliver something.
The good news is that retained placentas are often expelled on their own without causing serious problems. However, if the tissue doesn’t pass, it can become a source of infection. An ultrasound is the most reliable way for a vet to confirm whether placental tissue is still present. If you didn’t count the placentas during delivery (most people don’t), this is one of the more common explanations for heavier-than-expected bleeding at three days.
Uterine Infection (Metritis)
Metritis is an infection of the uterine wall that develops after birth. It causes inflammation that produces a discharge distinctly different from normal lochia. The key giveaway is smell: metritis discharge is foul-smelling and often looks more like pus than blood, sometimes greenish or grayish rather than the expected dark red.
A cat with metritis typically looks sick. She may stop eating, develop a fever, vomit, or lose interest in her kittens. Her milk production can drop or stop entirely. This is a serious condition that needs veterinary treatment promptly, both for the mother’s sake and because kittens should not nurse from a cat with a uterine infection. If you notice these signs, you’ll need to plan for supplemental feeding of the kittens while the mother is treated.
Subinvolution of Placental Sites
This is a less common but worth-knowing cause of prolonged postpartum bleeding. During pregnancy, cells from the developing embryos embed into the uterine wall to form the placenta. After delivery, those sites normally heal by shedding the embedded cells. In some cases, the cells persist in the uterine wall and the placental attachment sites keep bleeding instead of closing up.
Subinvolution produces continued bloody discharge that looks similar to lochia but doesn’t taper off on the expected timeline. The cat otherwise feels fine, eats normally, and cares for her kittens. It’s not an emergency in most cases, but it does need a veterinary diagnosis to rule out the more dangerous possibilities like metritis or hemorrhage.
Heavy Hemorrhage Is Rare but Serious
Major postpartum uterine hemorrhage is uncommon in cats unless the uterus was physically injured during delivery. But if it does happen, the signs escalate quickly. Pale or white gums, a weak or racing pulse, cool paws and ears, shallow breathing, and collapse are all signs of shock from blood loss. This is a true emergency. A healthy cat’s gums should be pink and moist. Pressing a finger against the gum should produce a brief white spot that returns to pink within two seconds. If the color doesn’t return quickly, or the gums are already pale, your cat is losing blood faster than her body can compensate.
How to Assess the Situation at Home
You can gather useful information before deciding on your next step. First, look at the discharge itself. Dark red or brownish-black with no strong odor is reassuring. Bright red, foul-smelling, or pus-like discharge is not. Second, check your cat’s gums by gently lifting her lip. Pink is good, pale or white is an emergency. Third, observe her behavior. Is she eating? Is she actively nursing and grooming her kittens? A cat who is alert, feeding her litter, and eating on her own is far less likely to have a serious problem than one who is lethargic, feverish, or ignoring her kittens.
Place clean, light-colored bedding in the nesting area so you can monitor the volume and color of the discharge over the next several hours. If the amount is decreasing day over day, that’s a good trajectory. If it’s increasing, changing color, or developing an odor, that timeline is moving in the wrong direction.