Brown Discharge Female Chin?

Hello! First Thread on here, but my little chinnie is experiencing a brown sticky discharge from her vagina. I’ve had her for years and this has only happened once a few years ago. I remembered reading it being like a heat or period sort of thing? But I can’t find anything on it now and I want to make sure it isn’t something else. It was also all over her cage. She’s a little irritated, but her behavior isn’t much different, she ate, she had her water, and wanted me to let her, but I want to...

Brown Discharge Female Chin?