Just like the title says. Riley had a shot of Delvostron 10 months ago. I was working 10 hours a day, Paul was in Denmark and I couldn't get either one into a boarding kennel as it was school holidays. So managing the heat wasn't an option. I was told she would cycle as normal right after her shot. She hasn't. No sign of heat since the shot. I regret it. Badly. My vet now tells me she could skip her heat all together then continue to cycle as normal. I also have been told it could delay her for up to 18 months. Sigh Anyone have any experience with it?