Help!!!

Nicole

Sooo I was suppose to start my period tomorrow. I got it Friday (4 days early) I use the <a href="https://play.google.com/store/apps/details?id=com.glow.android">Glow app</a> and every month I alwayssss get it on time. Never fails. This month it’s early and very different. Not a heavy flow at all. I do have high prolactin so I’ve been on cabergoline for the past 5 months. Anybody know what this could be??