TMI (Discharge) I’m so sorry 🙈

I swore I would never do this because it grosses me out when others do, but for the past week I’ve been having this discharge right when I wake up. There’s no bad odor or anything, but it’s not normal for me so I’m a little concerned. I only see it once when I wake up. Is anyone else experiencing this? I’m 36+6 and don’t go back to my OB until Thursday. Could it be yeast infection or mucus???