Getting mirena inserted.

I am getting Mirena inserted into Thursday, I have been doing research which has inevitably led me to horror stories and talks about the immense pain felt upon insertion. Although I know I should take each persons experience with a grain of salt, I can’t help but feel terrified and almost wanting to back out! I am a virgin so that terrifies me all the more. But I really do think it would be best! Please, if you could spare any advice itd be much appreciated.