Mirena IUD after effects

Mom of 2 here, 40yrs old. I had two c-sections & a tubal ligation. I have horrible cramps when it’s my time of the month. Motrin & ibuprofen do not help. My doctor recommended a Mirena IUD. I had it put in a week ago. I’m suffering daily cramps & I feel nauseous… is this normal?
I’ve spotted several days too. I’m about ready to give up & call the doctor to pull this thing out.