Can I use one with the IUD inside? U haven't read that many horror stories. I think my IUDs tend to. Like it up there as I had to get the previous one removed under general anesthetic. I'm at a loss as I'm going on a much anticipated holiday and I will have me. Period then!! Can't take those delaying pills and I leak with Tampons. The mooncup seemed pretty OK for. Leakage hut I had more cramping (or maybe I'm just having a bad period who knows!)