I have had the mirena for about 10 months. I have been cramping straight for 2 weeks and I was having many sign of pregnancy and took a at home test which ended up negative and yesterday I started bleeding fresh blood, it started off light and its getting heavier. I'm still cramping. I haven't bleed fresh (by fresh I mean bright red) since I gave birth to my daughter I would spot like extra light I wouldn't need anything and it would be the brown blood. I'm not sure if I should be worried or not