IUD ANYONE?

I got the mirena iud in July of this year and I had some spotting for 2  weeks and a half  and had very bad pain down there and I also felt it in my rectum for some reason, I went to get it checked and I was told that it was normal and they gave me birth control pills for 3 months so that they would help my body get used to the iud a lil faster, I started taking the pills and then period stopped for 2 weeks and Then i spotted for a whole month and and a half and had horrible cramps and since I am allergic to everything I had to take 3 500mg tylenols to help with the pain. Went to my doctor to get it removed and while being checked she said that she couldn't see the strings and checked for the iud and said it was on the right place just that the strings decided to hide in my cervix and to remove it she would have to use a tool which would make everything more painful. She said that it would be a better idea for me to wait at least six months because that's how long it usually takes someone to stop spotting amd to not worry about the string situation and she gave me more birth control pills for another 3 months. I just started my period again and I am feeling pretty bad cramps but they're not as bad as the ones from last time... has anyone else had the same experience ?