I’m 37 +1 and I’ve been cramping for like 2 weeks on and off! My boobs are aching more and I feel

Lots of pressure! My last appointments as at 36 + 6 and I was 1cm dilated and 60 % effaced. My daughter came at 37 wks and my son came at 37 + 2..could this be my mucus plug coming out in pieces? No blood as of yet..with my son I didn’t even notice this13 yrs ago and with my daughter I lost a huge mucus plug with some blood in it the night before my water broke..these are pictures over the last few days it’s very thick too not like semen or discharge…

Today..

Yesterday..

2 days ago..