Finally lost my mucus plug

Tomorrow I will officially be 37 weeks (full term) and I have already been cramping bad enough. Yesterday I was cramping so bad it was hard to exist and I finally lost my mucus plug in the toilet while having contractions. Every time I wake up from a nap now or anything comfortable I hurt really really bad. I get lower back pains that are severe and come and go, pain in my cervix especially when I stand up officially and I’m unable to stand up all the way without feeling like falling to my knees, feels like really really bad period cramps but it’s constant so it’s confusing. I have experienced Braxton Hicks before and it felt so different from this. I’m due Nov. 1st... I think my little boy is coming soon. Lol what are your thoughts? Has this happened to you? And what did it mean?