Has anyone gotten pregnant on the skyla IUD? I’ve had it for over a year and always get my periods like clockwork but…

Has anyone gotten pregnant on the skyla IUD? I’ve had it for over a year and always get my periods like clockwork but this month I missed my period and for the past 5 days I’ve had really sore breast and headaches and I never get those symptoms. I took a pregnancy test yesterday but was negative I just don’t know why I keep getting these symptoms.