Pregnancy with iud?

I know it’s super rare to get pregnant with an iud but I also know it’s possible. I had Skyla inserted in October and I absolutely love it but i started having some weird symptoms the other day. My period is due in 3 days but they don’t line up with any of my normal period symptoms. I did have sex while I was ovulating and I know I’m probably stressing out over nothing but could i be pregnant? Also have any of y’all gotten pregnant with an iud or known anyone who has?