working out & periods

Hi ladies!! I've been working out for about a month at home before I got a gym membership, now it's been about 3 weeks of working out at the gym. My period is late by 3 days according to eve but I have Nexplanon so my period is never on time. Last month my period was shorter than usual by 2 days. Just wondering if starting to work out has affected anyone else's periods? ☺️☺️