Hi. I am on the paragard IUD since november.I've also been using condoms. I've been getting my period every 6 weeks and they have been lasting about 2 weeks. Then Monday I started getting dry blood, no cramps or anything, only 3 1/2 weeks after my last period started. I started getting sick (headache, congestion, sore throat) on saturday and am starting to feel better now. What could this mean?