IUD Sickness

This has happened to me a few times and I'm curious if It happens to anyone else. 
Sorry if this is TMI, but sometimes when I'm on my period and have to poop, I get so clammy, nauseas and light headed I feel like I'm about to puke and pass out. 
It's horrible!
Anyone else? It's starting to freak me out now that it has happened multiple times