Just realized I’m 4 days late

I decided to start this app up again las night and I entered in my periods from Jan til now. A little back story on my periods, i used to be late all the time. I would go like 7 days and then start, my period was very irregular due to the depo shot and my previous hpv cells. So now it’s finally finding a rhythm. Jan and Feb I started my period early and it didn’t seem to last as long, I would heavy bleed the first 2-3 days and then spot the last 2. Could I be pregnant this time? I haven’t really had any pms symptoms like usual. Any thoughts on will be greatly appreciated!