Could I be pregnant ?

Hey ladies, I’m currently four days late. My breasts have been extremely sore especially when I first wake up.. but it’s normal before I start my period. As well as the fact that I’ve been so tired lately. I took out my nuvaring about a month ago and have had a period right after but I’m due for my period again and have not started. Should I wait it out, is it just my hormones acting up ?