Please give insight, kinda freaking out!!

So last month I had a 27 day cycle and the month previous I had a 30...this month glow predicts a 29 day cycle and I'm supposed to get my period the day after tomorrow..according to glow. Well when I counted as if I had a 27 day cycle like last month, my period would've started yesterday, which I thought it was going to because I started spotting a bit of brown discharge. Now I usually don't spot and last month when I thought I was spotting af came a few hours later, so I thought last night that af was just gonna come in the night, but it didn't...just a bit more discharge, brown but lighter than yesterday....do you think I could actually be pregnant?!