hbc qs: nuva and mirena

[knittinggoddess.livejournal.com]

I'm looking into getting a Mirena, and while I will post other questions on iud_divas, querying my friends brought up two items:

1. One friend lost the ability to orgasm after being on the NuvaRing for two years. She says that some of her other friends have experienced this as well. Have you? Has a doctor ever mentioned this as a side effect?

2. While using an iud, is it ok to use cramp bark, dong quai or any supplement for cramps that works by inducing uterine contractions?

Thank you, VPers!