Hi there - I had the Mirena put in a month ago and I'm naturally very slim with a high metabolism - but I've had steady weight gain (about 91bs in last 3 weeks!) and loads of cramps and back ache. I've been looking on the net to find lots of similar experiences - and I've decided to have mine removed tomorrow morning!

I have had a mirena coil for about 4 years and didn't realize until now that maybe I'm feeling like this could be side effect of the coil. I think I'm going to get it taken out. I have experienced disturbed sleep patterns, anxiety and every time I go to the doctor they give me antidepressants but I know I am not depressed! Have been very frustrated and pharmacist told me the coil can release a lot of hormone into the body.

Hi, I had the coil fitted only 8 weeks ago and have been bleeding this period for 25 days!

Yes, excessive bleeding is actually normal. I had mine put last September but as I have had symptoms that I am unhappy with I am having it taken out, though the Doctor says it does not cause weight gain.

What's really this Mirena coil/ is it some kind of surgery and is it too dangerous to have? I'm just curious..cause I really don't have an idea of what really is it?

The most common side effect with Mirena is a change in your vaginal bleeding. According to the Mayo Clinic, you may have no period, a light flow or an unpredictable period. Many women do not experience cramping or a period that is heavy. It is normal to have cramping after the IUD is placed within the uterus. However, if the pain increases after the placement of the IUD and does not go away, seek immediate medical attention as this is a possible sign of infection.