Anyone have a female dog go through this? My oldest we left whole thinking we would breed her, well 12 years later she got sick Saturday night and called the vet Sunday. Vet suspected pyometra and recommended spaying and that is what happened today. I know the infection can kill so I hope I acted fast enough. They called about 3pm and said she was doing good. I know she is older but I just can't part with her yet. The also found two cysts on one of her ovaries which would have explained her erratic and never ending heat cycles.