(TMI) Is this my Mucus plug?

Ma

I'm 39 weeks and 4 days pregnant. I had what seemed to be labor contractions this morning and timed them to see if I needed to go to the hospital. The pain was similar to bad menstrual cramps and timed from 5-10minutes at times. This occurred for about 5hours. The pain eventually went away...What could've caused this pain? I had not dilated at all as of my appointment last week. I hope I've dilated some!!

Vote below to see results!