"Mild cramping" refers to experiencing a slight or gentle discomfort or pain in a specific area of the body, usually not strong enough to cause severe pain or significant distress. Full definition
Your contractions at this stage may not be very noticeable, feeling like mild cramps or menstrual pains. (bounty.com)
Once your brain is signaled to create the oxytocin you will sometimes feel mild cramping in your lower abdomen, sort of like menstrual cramps. (romper.com)
Women who report that they felt mostly pressure, tightening or mild cramping sensations. (hypnobabies.com)