What are the warning signs of premature labor?

The warning signs of premature labor, also known as preterm labor, include:

Contractions: Regular uterine contractions that occur more than five times per hour.
Abdominal cramps: Dull, aching pain in the lower abdomen or pelvis.
Pelvic pressure: A feeling of heaviness or pressure in the pelvis or lower abdomen.
Low back pain: Persistent pain or pressure in the lower back.
Vaginal discharge: An increase in vaginal discharge, especially if it is thick, mucus-like, or bloody.
Menstrual-like cramps: Cramping that feels like menstrual cramps, which may come and go or be continuous.
Flu-like symptoms: Symptoms such as nausea, vomiting, diarrhea, or fever.