Spotting at 31 weeks?

Kassidy • 👼🏼👼🏼 🌈 Baby Girl July 2020 🎀 Baby Boy December 2021💙 Air Force Spouse❤

Has anyone ever spotted this late? Mucus plus hasn’t come out, it’s not a lot (a few dots on my TP), and no cramping. I have an ultrasound tomorrow and appointment Friday. Should I wait to bring it up until then?