Low sex drive while on the IUD

I used to have a very high sex drive before having my IUD. I wasn't on any other method of BC before because I wasn't sexually active. I've had my IUD for 8 months now and my sex drive has been so low! I no longer crave sex or feel the desire to even masturbate. When I'm with my boyfriend, I get in the mood & enjoy sex, but it's not as pleasurable or as intense as before. Has this happened to anyone else? What can I do to get my sex drive back up, even just a little? I miss the feeling of being horny sometimes!! Lol.