Stopping Makena Shots early

Currently 34+4 weeks with my second. I started taking the Makena injections at 16 weeks after having my first born at 27 weeks.

Today I went in for my injection and they did not bring my shots from the other location to the one I was being seen at.

The doctor told me I was far enough along to go ahead and stop the shots.

I’m just curious how long after stopping the shots others went into labor?

I’m hoping to make it to my csection date, April 2nd.