Period was supposed to start today

Jazmine

Ok so my glow app says I’m supposed to start my period today, I have been extremely tired the past couple of days, not as hungry and have been anxious I really want to take a pregnancy test but I don’t want to get my hopes up and waste another test 😭 my period has been on time except a couple months ago it was a week late. Any advice? Im used to PMS, could it just be that?