mucus plug vs. cervical mucus

Chelsea • My sweet hubby and I have been together since 2009. Our sweet Madilyn Ann born 11/5/16! We`re finally complete!
I'm a ftm. I'm almost 37 weeks and I'm not sure if I'm having normal cervical mucus or passing pieces of my mucus plug.  I've not had discharge/cervical mucus this entire pregnancy. Today twice when I've went to the bathroom and wiped there has been cream colored and clear-ish snot like mucus. Not a lot of it but noticeable. No blood. I seriously haven't had anything like this since before pregnancy. So I'm no sure if it's just discharge/cervical mucus or pieces of my mucus plug. How do I tell the difference?!