All natural "gentle birth" herb?!🍃🌿

So I know 3 women personally that have had a baby this year &  all of them used this natural herb for 5 weeks before their due date. All three of them had AMAZING drug free, extremely short and almost** pain free labor. I on the other hand want more reviews. I'm pregnant with my second, and my first labor was very long extremely painful, willing to try this all natural substance (a little but about me I've never been a  all natural, organic user/believer, not that it's good or bad) but wanted more advice :) any of you ladies used this ?