Short period

Hi ladies. I had my Mirena IUD removed the beginning of Nov 2020. I had a iud in for almost 10 years (2 different ones of course) my period returned to normal on Christmas Day (Merry Christmas to me) during the time of my IUDs I never had a period, now my periods come every 28-30 days but last only about 3 days and are pretty lite. Could having a short period have anything to do with not getting pregnant? Or mess with my ovulation date? Could that mean I’m ovulating earlier than what the app predicts?