I have the idu since oct 11really quick it is possible I can be preagnet and keep having my period well is like a period!?

IUD. If you have an iud, while it is possible for you to be pregnant, it isn't very likely. If you were, bleeding could happen. If you are worried about this, do a pregnancy test. If it's positive, you need to see your dr asap; all that said, it's very likely not going to be positive.