I've had my Mirena IUD in for about 10 months now and after I finish masturbating (even when only playing with my clit), I get pains along with bleeding near my left hip bones all the time. After sex, I never bleed or have pains which is interesting. I went to Planned Parenthood a few months back to make sure everything was fine, and the gyno told me nothing was wrong and my uterus was more to the left, causing me to only feel pain on that side. Is this normal?