I have heard that it is possible to become pregnant whilst on copper IUD, the only way to be sure is to take a test. It may also be that your period is on its way just a little late. Good luck
you could also be having a slight build up! That can happen on the IUD as well. I would most definitely take a pregnancy test. If you are indeed pregnant though there can be a risk of removing the IUD. If you still are concerned I would call your doctor and have them do an ultrasound to make sure that everything is okay and in place where it's supposed to be!
Good Luck and Keep us Posted!!
I would take a test just to be sure, I know a few ladies who conceived with the iud.
One of which had a son that was born with it implanted in his hand....crazy eh.
Be sure to take a test though, I know there is a risk of eptopic pregnancy with the IUD's aswell. Best of Luck
Oh the woman I know had healthy babies, just thought I'd let ya know that :)