Could I be pregnant?!

One week post period (lasted 6 days, very light, I also have irregular periods) after my period I had been having minor cramps that would come and go... I haven’t had them in 2 days and today when I woke up my breast felt abnormally heavy... then my child laid her head on my chest and that hurt. I’ve never had sore breasts ever.... I haven’t tested either. I need some opinions!