Prodromal labor?

Alison • Mama to two amazing boys and baby girl on the way!
Has anyone had experience with this? How long did it last for you before real labor started? I'm going on 3 days with zero dilation progress(from 3cm) after multiple trips to L&D thinking it had to be the real thing, after hours of labor and contractions 3-4mins apart and painful. I did not have this with my first son and I am beyond exhausted and frustrated 😩