Trying not to get my hopes up

I'm 5 days late according to period tracker. My boobs became super sore and swollen from one day to another. I started cramping a bit a couple of days ago so I figured I was going to get my period at any time but didn't .  Yesterday I would get cramps every time I stood up and was nauseous in the morning. Today I woke up to my boobs hurting more and a bit of cramping & a little nauseous but still no sign of AF. What could all this mean? I'm really trying not to get my hopes up