Regular contractions that get stronger, longer, and closer together
Lower back pain or cramping that does not go away
Pelvic pressure or feeling that the baby is pushing down
Bloody show or mucus discharge with blood
Water breaking or a sudden gush or trickle of fluid
Diarrhea or loose stools
Nesting or a sudden burst of energy
Cervix changes confirmed by a healthcare provider
Baby dropping lower into the pelvis
Contractions that continue despite rest, hydration, or changing positions