"It is not necessary to remove The DivaCup for urination or bowel movement; however, as The DivaCup sits low in the vaginal canal, it cannot be worn during intercourse. The DivaCup is not a birth control device and should not be used for this purpose. The DivaCup is regulated by the US FDA, Australian TGA and Health Canada solely for use as feminine hygiene protection.
Please note the following when using The DivaCup with an internal birth control device such as an IUD or NuvaRing®.
"The DivaCup is worn low at the base of the vagina and away from the cervix. This means that it should not interfere with an internal birth control device. However, please use caution when using any internal feminine hygiene product with an IUD as there is the possibility that they can be dislodged. When using The DivaCup, it is important to carefully follow the directions in our User Guide, paying close attention to inserting The DivaCup low in the vaginal canal and breaking the seal (suction) before removal. Many of our customers use The DivaCup with an IUD or NuvaRing® simultaneously, but we recommend that you become familiar with your birth control device’s risks (such as the body expelling the IUD, etc.).
"As with any gynecological concerns, please consult your physician prior to using any kind of internal feminine hygiene product, including a menstrual cup."
That's as close as they will probably get (for legal reasons) to stating that it's okay to use a DivaCup with an IUD.
I've had my ParaGard for about two months now and have gone through one cycle using pads and tampons. After having used my DivaCup for years prior, I was miserable. I think I feel good going back to using my DivaCup.