I have a Paraguard IUD, I got it 5 weeks ago. Just one week ago I started having bad cramps that lasted for a week with no period. Now this week I'm bleeding, way more than I ever have before and the cramps I'm experiencing are sharp, very sudden, almost like a stab or a pinch, and can be in my lower abdomen, legs, back and sometimes even in my rectum. Any experiences with this? Is this normal or should I see a doctor?