Help, need advice please and thank you!

So when I went to the bathroom and wiped it was slimy yellow, I’m 32 weeks pregnant and this is not normal for me or any of my past pregnancies. No smell, no itching, no burning etc.. just slimy light yellow discharge and light cramping. I have a doctor’s appointment first thing tomorrow morning so I’d hate to call if it’s nothing, but I am concerned after googling it. Any advice on what I should do? Just wait it out or call the emergency line for my doctors?