Nauseous on Paragaurd

Ashley
Hi ladies, 
I had Paragaurd inserted a little over a month ago. I've recently noticed that I'll randomly feel nauseous, but not so much that I actually throw up. 
Has anyone else experienced this? 
Also, if anyone is willing, could you post how your first couple of periods were after insertion? Were they heavy and constant? Did you skip one? How innconsistent were they? 
Thanks in advance!!!