Question

So I have a question have any of you mommies been on the McKenna shot, and if so, did you guys ever go into premature labor with a, even though it's supposed to stop it, I am 36 weeks today, and tomorrow I get my last shot.Thursday I was dilated to one centimeter and I was having really bad contractions so hospital sent me home, no injections are nothing, but my question is, can I still have her early, even though on the shot I've been trying everything I can to get her out. I'm so uncomfortable at this point.