Af is 3 days late

So leading up to when my period was due, I didn't have any of my normal period symptoms. Instead I have been extremely bloated and gassy. I've taken two tests, one a few days before, and the other when I was a day late. Both bfn. But my period still hasn't showed up, and now my boobs are starting to get sore (which usually happens a week before my period but it never did this time) so could it be finally my period, or maybe am I finally pregnant? 😩