Am I pregnant?

Caitlin • Mommy to H.D.J. on 12/24/15??Cole=BFF?UCHS Class of `17🎓🎉
So... I had my first child on Christmas <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> of 2015. Got my period back on March 2nd. Now I'm 12 days late. I'm also having similar symptoms to what I had last year when I got pregnant... Am I pregnant or is this totally normal for someone who just had a baby??? I have the Mirena IUD, btw.