Mucus Plug?

Nag IE ako Saturday morning 9am tpos 4 to almost 4.5cm dipa abot ng 5cm.. around 2.30am mag papalit lng ako liner at iihi pro meron ng ganito.. mucus plug ba sya or dahil lang sa IE? Currently 38 weeks and 2 days. No hilab no other signs of labor.. #MucusPlug #IE