Period - but maybe pregnant?

So my period was due Thursday but didn’t come. Yesterday evening I started more brown spotting. Usually when my period starts I soak through a super plus tampon in 3 hours the first day but I put a regular in overnight and it only had brown blood and I had to yank on it to get it out. I know it’s super rare but I’m still wondering if I might be pregnant. My boobs are still

Swollen too and usually they go down when my progesterone drops and my period comes. I also always get a ‘period pimple’ on my chin and that didn’t show this cycle either. I hate all this wondering!! If it doesn’t get heavier today I am taking a test tomorrow to be sure before NYE drinking.