Hello N.-
I do not have any experience with Paragard IUC, but if artificial hormones are a concern for you, there are natural alternatives that are completely hormone free and, just like some other artificial contraceptives, 99%+ effective when used correctly. My husband and I used the first method for the first 5 years of our marriage and the second one for the last 7 years. I like that the methods are completely natural, easy to use, involves my husband's input with our family planning on a daily basis, and it costs next to nothing! I completely breast fed my babies for the first 4-6 months, and didn't get my period with each of them until they were 12-15 months old. With the method you make different observations every day which tells you where you are in your fertility. As a result a husband and wife are able to have relations during the post partum time frame. NFP has so many benefits and is something to consider.
Good luck with your decision.
C.
P.S A general misconception that people get about NFP is that it doesn't work, partly because generally those who use it have larger families. I have 5 children; all who were planned. None of them were "surprises" or "accidents"!
http://www.nfpprog.com/how_nfp_works/symptothermal.htm
http://www.creightonmodel.com/