"i haven&#039;t had the mirena for very long, about 4 months. the first two months i bleed a normal period the whole time. i guess it&#039;s kind of normal until your body gets use to the hormones in the mirena which i guess takes about 3 months. but my doctor put me on a medicine to help slow down the bleeding which stopped my bleeding completely until a few days ago i got my first period and its so light! i don&#039;t even notice it until i go to the bathroom and even then its still hard to see because its so faint. loving it! other then that no other side effects. weight is the same and i&#039;ve always been a little moody so that&#039;s never changed. so to anyone who may have been freaking out about bleeding i hope this helps you."