Updated On September 23rd, 2025
Why would my dog be going back in heat? It has been more than 21 days. Now she is bleeding again.
1 Answer
Published on September 4th, 2015
Most dogs typically go into heat twice a year. The questions to ask yourself are: 1. Has she ever done this before? 2. Does the blood look different? 3. Is she behaving differently? Occasionally, bitches do slow their bleeding and then start up again briefly towards the end, but it is not worth the risk to assume this is the case here. If this is not how her heat cycles normally progress, it is possible that she has [pyometra](https://www.petcoach.co/dog/condition/pyometra/), or an infection of the uterus. Pyometra is common in older, intact female dogs that have recently had a heat cycle. It is a very serious condition that typically requires surgical intervention. Please bring her to your veterinarian or the nearest veterinary ER to be on the safe side. She needs to be seen ASAP, especially if she is lethargic, [feverish](https://www.petcoach.co/article/6-common-signs-your-pet-has-a-fever) or has a tender abdomen.
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