Stripping membranes

Monica • I`m a 30 year old military wife and mother to our 9 year old son, Rylan and daughter, Maci who is 4.
Question: do you ask to have your membranes stripped at your appointment or is that something you need to call ahead and ask for before the appointment? Never had it down with my son but hoping he'll do it at my 38 week appointment. My doctor is out of town until the 13th so not sure if he will but can't hurt to ask!