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You are using Mirena(Intrauterine Device
) for birth control which usualy work for 5 yrs.
Usually IUD has side effects of Bleeding and spotting may increase in the first few months and continue to be irregular. Periods over time may become shorter, lighter or even stop. Your late month period may be sideeffects but if you stil doubt you can do pregnancy
test...is there any other symptoms of pregnancy , morning sickness
and so on?
if not any symptoms contact your doctor aboutthe stopage of periods.