I'm 17, and today I noticed I had snot like white-yellowish discharge hanging out of me when I went to the bathroom. The second time I went to the bathroom I noticed it had a bit of blood or brown mixed in with it. I have an IUD so I don't get my period much at all anymore. I haven't been to my obgyn since I got my IUD back in March. I've also been having really bad cramps for the past almost week.