My dog's heat cycle is lasting weeks. Is her swollen vulva normal?

Hi there, and thank you for posting this question. The average heat cycle lasts about 4 weeks, however there is some variation. Typically dogs do not have bloody discharge for more than a week or so during this process. The vulva does remain swollen during this time, and after their first heat cycle it will remain more "mature" in appearance than it was prior. If you plan to spay her I would recommend waiting about 1 month after to allow the internal blood supply to regress back down to more normal size. Best of luck and thank you for using Pet Coach.

Hi. Yes a heat should not last that long or cause her lethargy. I would be concerned she is having an abnormal hormone balance, or uterine infection, which can be life threatening. The best thing would be to have her seen now at ER and to get her spayed ASAP

It is not unusual for the vulva to remain swollen for a period of time after the "heat" cycle is over. In dogs, there are [4 stages of estrus](https://www.petcoach.co/article/anatomy-and-function-of-the-reproductive-system-in-dogs). The combination of proestrus and estrus, which is often referred to as "heat" by breeders, lasts approximately 21 days. "Heat" is followed by diestrus and anestrus. During proestrus, the vulva swells and has a bloody discharge. During estrus, the vulva softens and becomes pliable in preparation for mating. It can take several weeks following estrus for the vulva to shrink back down in size, but it will never go back to the size it was before the first heat cycle. The same is true of the mammary glands, which enlarge slightly in preparation for [pregnancy](https://www.petcoach.co/dog/condition/pregnancy/).

Thank you for submitting your question regarding your dog. Her swollen vulva and the blood tinged discharge are consist with her heat cycle starting. However, the lesion in the pictures is abnormal. She could have traumatized herself by licking. If there is tissue protruding from her vagina, then I worry about a prolapse. If the area enlarges or seems to bother her, then she will need to see her veterinarian. I hope this information helps!

No, this is not normal. LuLu may have a uterine infection which can be life threatening. You need to have her examined by a veterinarian as soon as possible. Drinking and urinating more than usual and appearing quieter than usual would also be signs consistent with an infection. The veterinarian will give her a thorough exam, blood tests and possibly take an x-ray to visualize her uterus. Should LuLu get lethargic you need to take her to an emergency clinic.

This is definitely possible that she is already back in heat. She could also have an infection so be sure to keep an eye out for any abnormal behavior like not eating, lethargy, or vomiting. If you see any abnormal behavior or just want to be sure, I would have your vet take a look at her to ensure she is healthy. I would not breed her during this heat cycle since she just had a litter. I hope this helps!

This episode may be dietary related and completely incidental. As a first line approach, I would suggest to withhold food for the next 8-12 hours and then start feeding with a bland diet based on boiled chicken and rice in small portion every 6 hours for the following 48hours. Then gradually reintroduce the normal diet over 5 days. I would definitively recommend a veterinary check up if the signs persist or you notice diarrhoea, more vomiting, lethargy or inappetence. Please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.