Period time

Olivia • 19 • coffee lover ☕️ • Jesus adorer •
I am really unsure if my period started or if I'm just spotting. It's super light. And my period isn't supposed to start for a couple of days still. I thought it started Sunday. But now i can't be sure. 
It's my first month on the pill. So I have no idea what to expect when my period does start.