Let's second timers give these girls some advice on ways to progress your labor without medical intervention! Also, always good to get new tips.
1) Take a shower (not bath) and let the water run on your chest/boobs. It stimulates milk and oxytocin to strengthen your cx. I was stalling with DD and this got things moving FAST!
2) Use a breast pump. Its a good way to get nipple stimulation without the weirdness of you, or worse, DH playing with your nipples during labor.