How do I classify dark discharge? <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a>. doesn’t have it as an option, but I always get dark discharge at the end of my period, sometimes at the beginning. It’s not white or clear, and the only other option is spotting. Does anyone else have this issue?

(Btw, my gyno said there’s nothing wrong with me, but I’d like to know how common this is)