IUD questions...

Lianne
I just got my first IUD and I have a few questions: 1) can the iud puncture the uterus or be displaced if the cervix is rammed a lot during sex? 2) can it scrape/thin uterus walls? 3) does the plastic have any bad chemical effects or does it leak any chemicals? 4) can it affect my ability to have kids in the future? 5) can I still workout with an iud?