DivaCup

I've asked about this on here before, but what are everyone's thoughts on using a menstrual cup with an IUD? I loved my DivaCup but now I'm scared to use it. I used it today because I ran out of pads. I'm scared the suction is going to displace it. My strings are exactly where they were this morning before inserting it after wearing it all day and removing it. My strings are also coiled up right up by my cervix, so they don't hang down very low. They don't even hang, the way they coiled up I always feel a loop. I think I'm freaking myself out now because I have cramps. Should I be worried if my strings are in the same place? Am I just being paranoid?