TMI—could this be my mucus plug?

Katie

I’m 37+1. I had my first cervix check yesterday and doctor said I was maybe 1/2 a centimeter. I’ve had some pressure tonight, but no contractions. Just went to the bathroom and when I wiped this came out. Could this be the start of loosing my mucus plug?

I had a scheduled c-section with my first because she was breech so I never went into labor.