Orgasms and IUDs

Whitney
I've have Skyla for three years, and I've just recently got a new one inserted. Recently, I've discovered the beauty of an orgasm with my current boyfriend. Strangely enough, it's been happening through anal sex. However, since I've had my new IUD for almost a week now, I've not been able to reach my climax. I'm thinking it's maybe stemming from hormones, but I'm just confused and also quite frustrated. Has anyone else had this situation before?