Dog nipples are red.

Question
My dog just got out of heat. There some red spots on her nipples and are swollen. They don't hurt her. Its only one or two that are doing it. I know she didn't hook up with another dog. I just can't figure out what it could be. Can you help me.

Answer
Hi Charlie

Are the red spots like pimples?  When a female goes into heat her immune system dips and can cause skin issues.  She could also be experiencing a false pregnancy.  This is very common in dogs, she can have all the symptoms without the end result.