I have had my period twice in 6 weeks both times my period was normal, since sunday have been incredibly nauseas and vomiting occasionally as well as dizzy and tired.... my period ended yesterday... could it be my iud ?

Vaginal bleeding ?'s: If pregnancy is possible, obtain a serum HCG test, as pregnancies outside the uterus (ectopic) may cause this sort of bleeding. If the test is positive, see your physician, as ectopic pregnancies need immediate attention. If the IUD has been pushed by uterine contractions into the canal, it may cause bleeding, and your birth control from the IUD is diminished.