It's the mucus that's in between your cervix and the baby to help keep germs from getting to the baby, Google to see what it looks like
N also because ready for early labor at times. Good luck
U dont always see it! Ive had 3 baby's & only visibly lost my mucus plug with my 3rd! I had to google as I wasn't sure if it was my mucus plug or if it was the evening primrose I had been using vaginally lol google pic's were grose lol but they r useful :-)