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Is my dog in heat if she has light pink discharge but no swelling?

Updated on September 23rd, 2025

Pet's info: Dog | American Pit Bull Terrier | Female | unspayed | 7 months and 21 days old | 37 lbs

I think Luna got her period she has almost all symptoms a Except swollen vagina? Does this mean she isn't in heat also the blood was a light pink color she is licking the area and my male dog is. Humping her is she in heat or no

1 Answer

Most Helpful Answer

Jessica Keay, DVM

Answered By Jessica Keay, DVM

Veterinarian

Published on November 6th, 2018

If Luna has a blood tinged discharge and your male dog is showing an increased interest in her, it is likely she is in heat and possible just very early stages and this is why her vulva isn't swollen. You can read more about the heat cycle in this article: https://veterinarypartner.vin.com/default.aspx?pid=19239&id=4952188 (it is about false pregnancy but gives a good idea of the stages of the cycle). If, however, you think it is possible the blood could be in her urine/she is having urinary accidents/asking to pee more frequently then a vet visit is recommended.
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