Pregnancy

So I was 5 days late and haven’t had the worst week so so so tired and exhausted, sore back, kind of sore breasts, have had the weirdest feeling in my stomach all week, like nausea or being hungry but completely different at the same time, then today I got what I guess is my period I don’t know but it’s not how my period normally is? Could this mean I could be pregnant or not?