S.S.
It very well could be as each person responds differently and if you have Mirena there is a little bit of hormones in it. I would call the MD and ask to speak with the nurse and explain what has been done already and tell her you are still miserable. I had a horrible time with my Mirena and ended up getting it removed after just nine months due to constant bleeding, but can't remember if I had much tiredness and soreness. I enjoyed the convenience, but the bleeding was interfering with "life" and we were getting ready to try for #2 in a few months anyway, so it made sense for me to get it removed at that point and the symptoms resolved right away, but after this baby is born, I won't get another in and we'll try something else...(genetically, my family doesn't do well with IUDs so you might check with your Mom to see if she or anyone else had experience with IUD or other birth controls!!! Just an idea!). Good luck!
S., 26, mom of Tyrrone, 14 months, and expecting #2 in Aug 09 after removing IUD in Aug 08!