pad or no pad?

Victoria
Ok so I'm not supposed to start my period quite yet but it's unpredictable. I had some discharge that looked slightly bloody before I took my shower. My fertile window starts tomorrow though according to <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a>. So is it possible that, that's why or do you think it's just the period? Idk if I should put on a pad or not cause I don't have any panty liners. I really don't want to though cause I'm going out with my boyfriend tonight for the first time in forever and I'm tryna be cute & wear my lace underwear lmao.