Queen Vaginal Discharge: 5 Types, 1 Emergency

Discharge is not a diagnosis, it is a timestamp. Clear fluid during 4 to 7 days of heat is normal, blood-tinged fluid for 24 to 48 hours after kittening is normal, and pus together with a fever of 39.5 Celsius or higher, appearing 2 to 8 weeks after a heat cycle, is a pyometra and an emergency that same day. The color tells you less than the calendar does; the calendar plus a rectal temperature tells you almost everything.

Five Types You Will Actually See

The table sorts discharge by when it appears, because timing narrows the list faster than appearance. Temperature is rectal and should be taken before you decide to wait.

Estrus: Clear and Expected

A queen in heat produces a small amount of clear, slightly stringy mucus, sometimes with a faint blood tinge, across 4 to 7 days. She will also call, roll, and hold her tail aside. Volume is small enough that you usually notice it on bedding or on her vulva rather than as a flow. Nothing here needs treatment; the useful action is to write the date down, because 2 to 8 weeks later is exactly when a pyometra appears, and the interval is the diagnostic clue.

Postpartum: 24 to 48 Hours of Red, Then Brown

Normal lochia is dark red and heaviest in the first 24 to 48 hours, then turns brown and tapers over 7 to 10 days. A queen with a normal uterus has a temperature of 38.1 to 39.2 Celsius, eats within 24 hours, and nurses without protesting. Three findings move this from normal to a call: discharge that is green or foul rather than bloody, a temperature above 39.5 Celsius after the first 24 hours, or a placenta not passed within 24 hours of the last kitten. That last item is covered in retained placenta after birth, and it can turn into metritis within 48 hours.

The Emergency: Pus Plus Fever at 2 to 8 Weeks

Write this rule down: pus-like discharge plus a rectal temperature of 39.5 Celsius or above, in the 2 to 8 weeks after a heat cycle, means the queen goes to a vet the same day, and to an emergency clinic tonight if her gums are pale, she is vomiting, or she is collapsed. That combination is pyometra, a pus-filled uterus, and it does not resolve on its own. Closed pyometra is the more dangerous form: no discharge escapes, the uterus distends, and the only sign may be a fever, a hard abdomen, and a cat who stops eating for 24 to 48 hours.

Open Versus Closed: Why the Quiet Case Is Worse

In open pyometra the cervix stays partly open and pus drains, which owners notice and which buys time: the uterus decompresses and the cat often still eats. In closed pyometra the cervix is shut, so 100 percent of the pus stays inside, pressure builds, and the uterus can rupture. A ruptured uterus produces peritonitis, and survival then depends on surgery within hours, not days. Assume closed until an ultrasound says otherwise: a fluid-filled uterus with a diameter over 1 cm in a queen 2 to 8 weeks past heat is the finding, and it takes a 10 minute scan to get it.

What Else Produces Fluid at the Vulva

Not every wet vulva is uterine. Urine dribbling from a bladder infection or urethral obstruction looks like discharge but smells of ammonia and comes in 5 to 20 ml spots on bedding; a blocked tom is a separate emergency, and a blocked queen is rare but possible. Vulvar fold dermatitis produces a greasy, yeasty smell with no flow at all. Vaginitis in a prepubertal kitten gives a small cloudy discharge and usually clears in 7 to 14 days. Vaginal or uterine neoplasia is uncommon but presents as a blood-stained discharge in an older queen that is not cycling. Cytology and a urine sample separate these in one visit.

Tests Worth Paying For

Ultrasound is the first test because it measures uterine diameter and shows fluid, and it costs 80 to 180 dollars. An X-ray adds little for fluid but confirms a distended uterus at 120 to 250 dollars, and the two are compared in ultrasound versus X-ray. Blood work matters for the decision, not the diagnosis: a white cell count of 20,000 to 40,000 per microliter, a globulin rise, and a rising kidney value all push toward surgery rather than medical management. Culture is worth taking at surgery, since E. coli accounts for most cases and resistance changes the post-operative plan.

What Treatment Looks Like, and What It Costs

For an open pyometra in a queen you want to breed again, prostaglandin-based medical management is sometimes attempted, with a success rate of roughly 70 to 90 percent and a recurrence rate near 10 to 20 percent in the next cycle. For a queen you do not need to breed, or any closed pyometra, ovariohysterectomy is the definitive answer and removes the recurrence risk entirely. Surgery runs 800 to 2500 dollars, medical management 300 to 800 with 2 to 3 rechecks, and the itemized comparison sits in the breeding cost calculator. No drug dose belongs in this article; dosing depends on weight, kidney values, and the drug chosen, and it is set by the vet who has the blood results.

Five Steps When You See Discharge

• Take a rectal temperature first, before anything else; 39.5 Celsius or above with pus means go now.
• Note the date against her last heat; 2 to 8 weeks after heat is the pyometra window.
• Photograph the discharge on a white paper towel, since color fades and memory shifts.
• Check appetite and water intake for 24 hours; a queen who refuses food for 24 hours goes in.
• Book ultrasound for any discharge that lasts past 10 days or recurs within 3 months.

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