Membrane Sweep + Bloody Show

Kate

I am 38 + 1 and 2cm dilated with my 2nd. My doctor did a membrane sweep yesterday around 3pm and just lost my mucus plug which was blood tinged (bloody show?) today around 4pm. For those who have been through similar before, how long after bloody show caused by membrane sweep did you start having labor contractions? I’ve been having on and off mild contractions since Monday night, but nothing significant.