Spermecide.......IUD is dangerous. Go with a female condom. Something not so invasive
Are you trying to find an alternative to oral contraceptives? The pill is a good way to start with B.C. My gyno wouldn't give me the IUD since I've never had kids and recommended the pill instead. As long as you take it everyday at the same time, you'll be fine. I set an alarm on my phone to help me remember.