Readjusting my cycle on here?

I just completed my first month of birth control and I’m confused about how to readjust my cycle on here to fit it. I started it on the first day of my last period. I’m not completely sure if I have a period right now or if I’m spotting? I’m 16 and in the 5 years I’ve had my period I’ve never experienced spotting so I have no idea what it’s actually supposed to look like. I started seeing a little blood yesterday and today but it’s EXTREMELY light compared to the crime scene level periods I usually get, all I wore was a thin liner. Most of it was brown at first but some was fresh today. I start my next month tomorrow. How do I put all of this in the app? I’m not sure if I even asked that right lmao but basically if I stop bleeding and don’t even get an actual period do I just let my cycle keep going on here? This is all so confusing.