Spotting on the pill

I have taken Yaz before but recently stopped for a few months to see how my cycle did on its own. I started taking the pill again; I am two days away from the sugar pills and am spotting a bit. I've taken them at the same time every day (thanks to the alert on this app 🙏🏻) 
I didn't have spotting when I started taking Yaz the first time, so I'm a little worried that I'm having spotting this time around. Should I be concerned?