So, I had the MIRENA for two years and I always had my periods. The last couple months I had bad pain, I had it removed. The pain went away. It's only been three weeks and I've bleed for two of them and now I have dark discharge that isn't old blood. I've been sick to my stomach and had migraines and weird cravings since then as well. We have had sex but used protection. I took a test and it said negative. I just have a bad feeling. Should I be worried?