Getting an ultrasound..

Apparently due to the symptoms I described to my dr today she says I need to get an ultrasound to make sure my iud hasn’t moved. What I told her was I became nauseated last week and you know had cramps often. So now I have to schedule an ultrasound to make sure. I forgot to mention to her that I get so tired that I can pass out with little to no problems. I pressed my abdomen a little while ago and it was tender. I’m a little nervous now. Any opinions or anything?