Spotting?? Or start of period?

So according to glow, my predicted period was supposed to start two days ago. But then again, my cycles have been crazy lately, my last cycle only lasted for 20 days and now I’m on cycle day 33, still no period though. I’ve also tested yesterday with fmu but it was negative. So is this spotting or the start of my period? I only get it when I wipe after I pee. Help please!!! 🙏🏻