What’s wrong?

Usually I have my period, then nothing, then discharge, then nothing, then my period, and so on. I had my period, then nothing, then discharge, then nothing, and now discharge again. <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> says my period is due for today. I was wondering if it’s normal to have just regular discharge even though I should be bleeding right now.