How long after mucus plug will i go into labor if i'm 40 weeks and i have dilated 1cmand what can i do to get it started

Soon: The time varies before active labor starts, but the plug loss is the beginning of the process prior to initiating labor. Mother nature is "in control" of when labor starts unless the OB does induction of labor with pitocin (oxytocin).

Just have to weight: You have to weight and let nature take its course, soon your cervix will dilate more and your amniotic sac will break and real labour pains will end in a healthy baby good luck.