Lady juice or CM?

I’m sorry if this is too much information. I’m just discovering this app and not many people around me talk about TTC or much about the female body & how she works. Hubby & I have been TTC for about a year. I’ve never really started paying attention to my body until the past few months. During the month (i mostly notice while at work!) when I go to the bathroom and look down into my underwear its like I’ve “creamed” myself. There’s a mucus type of goo in my underwear and I always have to wipe it off. What is this?