Labor ? Or False Labor ?

Joanne

38 Weeks 6 Days had a cervix check yesterday and was told it's still closed, Been having contractions all night first they were every hour , than in the morning every 7-10 minutes and now every 3-5 minutes lasting 20-36 seconds, lost some mucus with brown in it a hour ago. They just feel like really strong menstrual cramps but I've been feeling them in my lower back more than my stomach.