Mucus plug

So about 15 minutes ago when I went to the bathroom I lost a good bit of my mucus plug enough to scare the hell out of myself. I’ve been having contractions since last night that hurt but they aren’t too bad. I’m wondering if any of you ladies have started the contractions and lost all your mucus plug completely? I’m thinking the rest will come out tonight because of the contractions. When you lose all the mucus plug how long does it usually take for you to go into labor? I know everyone is different but I’m just wondering. My first I was induced so I didn’t really experience this.