CM question

So for the past couple weeks I’ve been having an increase in cm. It’s normal, no odor, no pain. I got kind of used to seeing it when I wipe or on my undies. Well the last two days it seems like I’ve dried up. It’s weird not seeing anything when wiping or on my undies, it even feels more dry when I wipe, if that makes sense. I’ve heard and Increase In pregnancy is normal, but is a decrease normal too? Btw I’m 17 wks