I got a mirena IUD put in last july. I had sex the first time since I got it yesterday. I broke down and had sex with my kid's dad. I'm embarrassed bc he's a douche, but well.I needed it. Today I was spotting brown and passed a black clot. I haven't had a period in almost 2 years (pregnancy, bf, and the iud). Should I call the dr, or is this normal with an iud?