TMI: Snot-like discharge at 18w4d? (No pic.)

Hi all. Just used the restroom and when I wiped there was about an inch or inch and a half of thick snot-like discharge on the TP. It was the same whitish/ivory color of the normal creamy discharge that’s common in pregnancy. I HAVE had this kind of discharge before outside of pregnancy as a part of my normal cycle, and smaller amounts of snotty discharge in pregnancy so far, but not this amount within pregnancy until now. I’m worried it could have been a big part of my mucus plug? It wasn’t brownish or bloody at all, and if I wasn’t pregnant I would think it was pretty normal. But I’m worried it could be a sign of cervical incompetence or something! Help?