35+5 and labor pains?

I’m 35+5 and I’ve been having back labor type pains on and off for a week or so. I’ve pushed it off as Braxton Hicks considering I’ve not actually went into labor yet.

Today I’ve had consistent back labor type pains all day, laid down to take a nap and now I’ve woken up and my lower back, entire butt, tops of legs, and pelvic area are all SUPER SORE! Like when I stood up our of bed it brought tears to my eyes and feels like I’ve been sitting in a metal chair for a week straight!

Could this be a sign that baby will be coming soon? My dr said she wouldn’t be shocked if I went into labor anytime before 38 weeks.