A member asked:

Hi , i got inserted a mirena iud 13 days ago , i used to have 'normal blood' but now i have brown/ black blood . should i be concerned about it? also, my lower back hurts pretty bad since 3 days. what should i do ?

A doctor has provided 1 answer
Dr. Jeff Livingston answered

Specializes in Obstetrics and Gynecology

Common: Some irregular bleeding occurs for about 2-5 weeks after Mirena insertion. The low dose of Progesterone causes the endometrial lining to thin. This triggers some shedding of the lining. Overtime this is what leads to light or absent periods with Mirena. If you are experiencing back pain consider seeing a doctor to evaluate this. Back pain is not a typical side effect of an IUD.

Answered 1/4/2018

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