37 weeks... membrane sweep?

I have an appointment this afternoon with my doctor. Last week she asked if I was interested in getting my membranes swept. I’ve been having more bh contractions than usual and at my last appointment she checked and I was 1 cm dilated and 50% effaced. Anyone ever have their membrane swept and if so, how long afterwards did you go into labor? I don’t this little guy to come too soon but I don’t want to go past my due date either.