Needing opinions! Is it normal?

chelsey • Married the love of my life, just waiting to conceive a little angel 💕
So I'm supposed to get my period tomorrow, according to glow. Which I know it's about that time anyway. The last two days I cramped really differently. And I haven't cramped today but I've also felt so offset. I can't  get enough sleep and I started having a light brown discharge. I've never been pregnant before but I've also never gotten this brown discharge either. Opinions? I don't want to test too soon. Maybe it's just my imagination?