Pregnant and Mini Pill?

Has anyone gotten pregnant while on the mini pill (norethindrone 5mg)? My periods have been irregular since starting the pill over a year ago... I was due for AF yesterday, but a missed period isn't too alarming for me at this point.

But I'm having weird symptoms after I take my pill at night--nausea, smell sensitivity (I slept in a different room last night because my husband's lotion make me gag). I've also been v bloated and had some sinus trouble for two weeks or so (I'm an elementary teacher though).

What were your earliest signs of pregnancy??? I'm freaking out over here.