Sex with IUD

So I got my kyleena iud put in last year. I’ve never had sex with it till last week. It was totally fine, but then a few days later when he’d go to put in I’d get a sharp pain in my vagina. We waited a few days and tried again and the sharp pain happened again. Any advice?? I’m thinking maybe my IUD moved. I don’t have pain anytime except when he tries to put it in. We obviously stopped once I felt the pain