Pimple-like abscesses on privates

[bakingpotatoes]

My chinchilla just went to the vet yesterday for symptoms of Pyometra, luckily she doesn't have it, but there was something wrong. We have pain medication and something to flush out gas/food as that was the vet's assumption. Today we found several "pimples" on her private area. She is red and swollen down there. Could this be an allergic reaction to medication? Please help!

 

[Amethyst]

I would call the vet, never heard of that before.