Anyone have cramping after mucus plug came out?

Helen
My mucus plug has slowly been coming out for 3 days now, no blood yet, mostly clear. Every time I lose some my lower tummy starts cramping so bad but will go away after about 20 minutes. I will have mild lower back pain as well. I've informed my doctor I've been losing it & she said there was no reason to worry about being in labor until my water broke.. I'm 36 wks 1 day. How long after some of your mucus plugs came out did you have until labor started? I've heard hours & I've heard weeks. Would like some feed back from people who have dealt with this recently. Thanks :)