Passed mucus plug.. how long til labor?

I know no one can give me an actual estimate but god it’s bothering me. I’m 39 weeks + 4 days. I’ve been having contractions but I’m having troubles timing them so I’m not too sure. This is my second, with my first I didnt get contractions until after my water broke. It’s frustrating.🙁

How do you friggen time them? Like I forget so easily.