Is this normal discharge or mucus plug?

So I read that you could lose parts of your mucus plug. But with my first it never happened until the night before labor. So I’m just curious if this is it because this is an off and on occurrence for a couple of weeks now and it comes out in one large glob and is normally gone within the first wipe. But once I get up off the toilet I get little contractions, and my doctor has never mentioned any yeast infections and they check every single time I go in. I’m only 35 weeks so I’m hoping it’s just normal discharge but again never went through this in my previous pregnancy.