3 Days Late, Sore Breasts, Tired, Emotional

According to the app, and my schedule, my period was to show up on the 4th. I am 3 days late, my boobs are so so sore (they rarely ever are), I've been so tired for the past 1.5 weeks, cramps almost all day (some stronger than others) but it feels like my period is about to show up, and I've been getting a little nauseous but never to the point of throwing up. Trying not to get my hopes up, but do you think I should wait a couple more days to do an at home test?