Consistent Braxton hicks?

Dr
Currently having Braxton hicks roughly 6 to 7 mins apart. They don't hurt just tighten. Can labor start like this? My dr checked me today and I was at a 3, he was able to stretch me to a 4. He said labor should be right around the corner. I've been loosing my mucus plug for three days, and ALOT of it today but it slowed down a bunch. Does labor always hurt at first?
Not a FTM but this is my first natural labor. ☺️