Embarrassing!

So today my boyfriend and I were just doing our thing, gettin in the mood, when he pulls my panties down and I felt something wet against my leg as he did. I looked down and there's a huge gob of white, sticky discharge in my panties. Great👎 I tried to just pull them down all the way so he didn't see, but he could tell I was uncomfortable. After I explained what happened he was completely understanding; I explained CM and how I'm ovulating tomorrow. But still... Looking down and seeing it there threw me off a bit.... This happen to anyone else?