Anxiety with IUD

I got the Mirena placed in July so i’ve had it for two months and I went back for a follow up on September 9th and my doctor confirmed that my IUD was in the correct place. me and my boyfriend decided after lots of talking about it for him to come inside. i have horrible anxiety and even though i know my chances of getting pregnant are slim to none i can’t help but be horrified. does anyone else experience this? I got the IUD for this specific reason and i’m glad i have it but does anyone have any tips on how to get over the anxiety?