hi there, firstly the side effects mentioned in this thread are quite common for many mirena users. the following website gives a list of common side effects as well as other effects which are mentioned in sections such as Warnings and Cautions etc.
Getting the mirena out should not hurt - it may be uncomfortable but not actually painful. That is assuming that the doctor is careful and considerate of you, and that the mirena is in the correct position and not embedded into the uterus, which would often mean an operation. If it hurts a lot as the doctor is trying to get it out, tell them to stop a minute and ask why it should hurt etc. My cervix lays right back and i always have a lot of pain and trouble with cervical/pap smear tests - in fact i dread them because the pain sends me through the roof!! But with mirena removal, i had no problem whatsoever - the doc and nurse spent a minute looking inside me to make sure it was in the correct position, and when the doc was satisfied that all was in order, she took it out gently with only a very little discomfort, but no pain.
Some people bleed afterwards, and to help avoid any extra trauma to your system after getting it out, i would always suggest you go home and rest up for the remainder of the day. Lay down flat if you can, perhaps with a hot water bottle near the area (though not actually resting on top of your tummy, due to the weight of the hot water bottle). Do not bend or pick up anything heavy (like children lol) for at least a couple of days. And only do very gentle excercise such as walking, building up gradually to the form of excercise that you would usually do. If you bleed, you could also try red raspberry tea which helps to tone up the uterus (to be avoided in the first 3 months of pregnancy, but any other time, it does the uterus a lot of good).
See how you go and report back to us. Good luck, hope all goes well:) Kabel xx