I got my Paragard IUD inserted April 5, and my period ended the 8th. I haven't had any real spotting until the last few days. Is it normal to not spot at all and then suddenly have it start like this? It's mostly just after I go to the bathroom I'll notice it on the toilet paper. It's been a light brown/pink color which I'm assuming is mostly older blood. How should I know when it's a problem?