Diva cup while ttc?

Ok I know this seems like an odd question but I was thinking about it since I'm expecting AF to visit soon. But has anybody tried using their diva cup after sex to hold sperm? 😝Kinda like putting pillows under your body to keep sperm in longer. I know the right sperm will reach where it needs to on its but why not? I think I've tried a lot of weirder things than this. What are your thoughts?