Mouse with Vaginal Discharge

[MinervaThonosi]

So I visited my friend's house and giving her mouse some loves. This mouse is obese, because she justs eats and eats and eats. As I was putting her back in her home I thought I saw something. I picked her up and looked at her belly. She's got some white discharge coming from her vagina. I told my friend about it and was told that was new. Other than the fact that she's fat there's nothing wrong with her. Help?

[Kitsch Slapped]

Sounds like infection of some kind. Hopefully not pyometra. Definitely needs a vet to check her asap and probably prescribe antibiotics.
Has she always been fat? Or has she chubbed out a little more than normal recently? If so, I'd lean towards pyometra as it can make the belly area larger than normal.

[MinervaThonosi]

She's been that fat for about 2 years.