My period was due on Christmas I did not receive it so I am a day late or should I say 2 days late…

My period was due on Christmas I did not receive it so I am a day late or should I say 2 days late haven't took a pregnancy test super nervous I'm going to get a big fat negative but I have tender breasts lower back pain cramps in my thighs so I'm not sure if those are signs of pregnancy or my period coming even though it's late I also have been having cravings and very sleepy!