I don't know what to think

Hey girls, so I have these 2 apps; My Calendar, and Glow.

as you can see, they both say the same thing (my period, my ovulation) & I always mark on both and update each day my moods, intercourse and EVERYTHING.

I was supposed to get my period yesterday, I've been in pain since the 20th (like my period is coming) my boobs hurt a lot too. I took a pregnancy test a week ago, it was negative. but my mom says it was too early. I know my period is coming maybe tomorrow morning. i have a 28 days cycle. it's day 32 and nothing. but my friends and mom are talking all day about the possibilities, that I may be pregnant. Maybe it's just me, maybe too much thinking about it?? Tell me something.