Mirena IUD

Lauren • Wife, mommy to a little boy and a baby girl

So I am on the Mirena IUD and have been for the last 15 months so I don’t have regular periods or bleeding but I can kinda assume when my periods are. The last week and a half I’ve been nauseous so I decided to take a test and it was a faint positive and I took another and it was a faint positive. So I bought a different Brand of pregnancy test and those 2 were negative.

So either the second brand couldn’t pick up that I’m pregnant since it’s too early OR the 2 we’re faulty...

Has anyone here got pregnant on an IUD?