Cytotec and IUD

Has anyone ever taken cytotec pre IUD insertion? Did you have any side effects? I’m cramping pretty bad and seems like I started my period... can’t tell if that’s from cytotec taken a few hours prior or just starting my period ( I was supposed to start in a few days and it may just be early and it’s coincidental timing with the cytotec). Just wondering what is normal and what isn’t!